"Deadlyunderwaterpredators." "Hunters of the deep." "Andhejustshookme like a rag doll." "Thereisnothingahumancan do to combat a 4,000 pound animal." "Sincethedawnoflife , they've ruled their universe." "If you were around for tens of millions of years, you would be good at what you did, too." "Butthebalanceofpower is shifting." "Classic killers are being pushed down the deep's most deadly list as others move up." "Youdon'treallyknowhowfar away they are until they hit you." "Whichwillbe thenew number one, and why?" "Countdown to the deadliest predator in the underwater universe." "Underwater Universe 1x02 Predators of the Deep Original Air Date on March 9, 2011" " sync, corrected by elderman " "3.5 billion years ago, Earth's earliest life forms are born in the underwater universe single-celled organisms that evolve to produce energy through photosynthesis." "In return, they produce oxygen, sparking the evolution of life on Earth." "Over hundreds of millions of years, the deep becomes the breeding ground for the deadliest predators on Earth." "Predatorsintheocean are historic and epic compared to what we have on land." "If you look at amazing creatures that live today, the ocean takes the cake." "Today'soceansarefilled with predators that can kill a human being in a matter of seconds." "Five top the list." "Five animals that no thinking human should tangle with." "Which one is responsible for the greatest number of human fatalities in the last five years?" "Humanbeingshave always been afraid of big scary things in the ocean." "Big scary things evolve in the ocean because a predator takes hold of a particular niche and is able to exploit it so well that it can grow huge." "And of course it exploits it by developing teeth." "Manyofthetop predators of the past use the power of their size and a bone-crunching bite to kill their prey." "The same is true today." "It'scomingright toward us, Michael." "Asfaras an animalthat" "I wouldn't want to swim with," "Orca Whales are terrifying." "Numberfivein thecountdown to the underwater predator deadliest to man is the Orca." "Also known as the killer whale." "12,000 pounds. 30 feet long." "These marine mammals are apex predators." "Hunted by no other animal." "They belong to a suborder of whales called "toothed whales."" "Fierce hunters, equipped with massive jaws and teeth that curve inward." "They can latch onto any prey." "From fish, to seals, to whales almost twice their size." "Killerwhalesarethe most widely distributed large mammals in the world." "They live anywhere they want to." "They live in the arctic, the antarctic, the tropics;" "they live everywhere." "InAntarctica, they've devised a cunning way to rock seals off ice sheets." "To do it, they work in groups." "Theyhaveacomplexfamily structure." "They communicate with one another when they're hunting, when they're diving." "Occasionally,whaleshave used their intelligence and sophisticated hunting techniques to take on humans." "Inthecoastaltownof" "Falmouth, England, in the local maritime museum, three brothers examine the tiny dinghy that saved their lives." "Doyouremember how that got rigged?" "It'sa starkreminder of a brutal confrontation with a pod of killer whales." "In 1968, their father, Navy veteran Doughal Robertson, is a struggling farmer in rural England." "Douglas, the eldest son, is 14." "Twin brothers Sandy and Neil are nine." "Wehadno ideawhatsailing in a boat at sea was like." "And Doughal used to talk about it second nature." "And one day Neil said, "well, daddy's a sailor;" "Why don't we sail 'round the world?"" "Andmothersaid,isn 't that a marvelous idea?" "Well,no,shesaid," ""that's a wonderful idea."" "Awonderfulidea." "Whatever." "Andthatwasit." "Theseedof an ideaissown ." "In 1970, their father sells the family farm and buys a sturdy 43 foot wooden sailboat called "the Lucette."" "A year and a half later, the Robertsons are 200 miles southwest of the Galapagos" "Islands, in the same area where back in 1820, a close relative of killer whales, a sperm whale, turns and charges a whaling ship called" ""The Essex"." "An eyewitness calls it an act of revenge on the men who attacked the whales first." "The 238 ton ship is smashed in two and sinks, inspiring the great American novel "Moby Dick"." "A century later in the very same waters, the Robertson family starts another day onboard" ""The Lucette". 12-year-old Sandy has the morning watch." "Offonthestarboardbow,  quite a long way, we saw whales." "And we didn't take any notice of it because we'd gotten quite used to them." "Butthesewhalesare anything but friendly." "Thefirstindication" "I had was an almighty crash." "Bang." "Bangbang." "That's how the strikes came." "And they were so severe that they lifted, bloody lifted" ""The Lucette" out of the water by maybe a foot." "One12,000poundwhale, traveling at 15 miles per hour has the impact of a wrecking ball." "Mycupof tealeft the boat up in the air like that and then came back down again." "And as I looked over the side, there was this huge killer whale." "I knew that was an attack, because the damage, it was just a big hole in the boat." "Dadwasup to hisknees in water." "And then he said," ""abandon ship." And I said to him, "abandon ship to where?"" "We're in the middle of the Pacific Ocean." "TheRobertsonswatchtheir sailboat sink beneath the waves, and wait for the whales to strike again." "Irememberthewhale going round us at night." "Thefirstnight,the big  whale swam round us, and he was huffing and puffing." "And we were scared to death." "Killerwhalesareknownto circle their prey before an attack." "Wethought,thisisit." "The killer whales will now come back." "Butinstead,by morning, the whales disappear." "The question is, why did they attack "The Lucette"" "in the first place?" "Did they ram it in anger as the sperm whale in the Essex tragedy supposedly did?" "Or did they somehow mistake the boat for prey?" "The answer may lie in how killer whales hunt their victims." "Scientist Peter Tyack has been recording the subtle sounds of their sonar." "Thatclickenergygoes out of the whale, into the water, and reflects off everything around it." "The sonar of all toothed whales is highly focused." "It's like a flashlight beam of about six degrees." "So very narrow beam, and the animal scans around looking for prey until it gets one in the beam." "Killerwhaleshavethe keen sense of hearing characteristic of all mammals." "However, as a part of their adaptation to life underwater, it has evolved into a form of sonar called echolocation." "Theanimalprocesses those echoes." "And its brain tells it:" "That is a mullet, that is a seal." "Andwhenthey'rehunting other whales that have the ability to hear their sonar, they modify it;" "creating what scientists call" ""stealth sonar."" "Theymakefainterclicks, they make fewer of them, and they don't make them as regular, so they're harder to hear." "Withsenseslikethis, it seems highly unlikely that a killer whale would mistake the sounds and shape of a sailboat for the sounds and shape of a whale." "Theboat,whichisan air-filled cavity in the water, would be a very good sonar target, but it would be really different from another living organism." "So I'm sure that a whale could discriminate a boat from, let's say, a Baleen Whale." "HistorianRichardEllishas  come up with his own theory for the attack." "Itmightbe thekiller whale's idea of a big joke." "They catch seals, and then they flip 'em up in the air." "It's very difficult to figure out why they would do either sinking a boat and then swimming away, or playing with their prey when it's already dead." "Maybe it's fun to do that." "Whalesdofrequentlyplay with objects, but I think the idea that killer whales would ram a ship in the sense of play just doesn't make sense to me." "TheRobertsonsagree." "Thebigwhale'sheadwas split open, and blood was in the water trailing behind it." "And I know that wild animals don't take chances." "They must have committed to the attack." "Ifitwasadeliberate attack, the Robertsons insist they did not provoke it." "For victims and experts alike, the whales' motive remains a mystery." "However, the consequences are all too obvious." "For over a month, the Robertsons are at the mercy of the underwater universe;" "subsisting off rain water and the occasional fish." "Iremembertalkingwith" "Doughal one night and he said," ""the school of survivors is harsh, because there are no failures."" "And that is very true." "Then,onthe38thday,  they are spotted by a Japanese trawler and rescued." "They have survived the attack of one of the world's most powerful predators." "In the last five years, there have been five cases of killer whales attacking humans." "Almost exclusively by captive animals in aquariums." "And only one fatality." "It's a very different story with the next contender in the countdown to the underwater predator deadliest to man." "It'skindof like diving with a bunch of Velociraptors from Jurassic Park." "Thoughthekillerwhale is the most powerful hunter to roam the underwater universe, the next animal in the countdown to the underwater predator deadliest to man is one of the most aggressive." "Number four is the Humboldt Squid." "WhenI seetheHumboldtSquid coming out of that curtain of darkness at me," "I get the same feeling." "It's one of a tinge of fear, awe, and respect." "Humboldt Squid are like the Earth's resident alien species." "6feetlong,weighingover  100 pounds." "The Humboldt Squid's traditional hunting ground extends from the Chilean coast to Baja, California." "Mexican fisherman call it el diablo rojo-- the red devil." "Wedon'thaveafossilrecord on these animals because they're soft, but we do have some evidence of giant squid in the past, and they're just as big and just as aggressive now as they were back in" "the prehistoric days." "UnderwaterresearcherScott" "Cassell is one of the few documenting the anatomy and hunting technique of this bizarre predator." "Theyhavethreehearts and they pump blue blood through their veins." "They also have some of the largest gills of any squid species." "Scientistsspeculatethat the combination of 3 hearts and large gills allows the Humboldt Squid to survive in low oxygen environments." "This means they can hunt throughout the deep, in places other predators can't go." "Thesquidwillgofrom  a 2,000 foot depth and come up, which is a thousand pounds of pressure difference per square inch and go through a 40 degree temperature change and not show any effect." "Onceinanew huntingground, they devour any prey they find." "Theyeatanything." "One Humboldt Squid will eat 21,000 pounds of fish in its lifetime." "Each." "Scottdiscoversearlyinhis research that not only do they hunt prey indiscriminately;" "they attack with little provocation." "MyworstattackwithHumboldt" "Squid was my first." "1995." "Scott is diving on a routine research trip." "Irolledoffinto the water and I start looking at this squid." "And I was so happy." "This was like a life's work." "Finally I got to see a giant squid species." "Atfirst,Scottismesmerized by the animal." "Theyhaveeyesthatarejust as developed as human eyes." "So when they look at you, you feel very disarmed." "Because they're studying you." "Butthatis theonlyhuman thing about them." "Scott notices that the squid seems to be putting on a light show." "Theychangefromred  to white, with amazing patterns and speed." "Dark red is the first color to disappear in seawater." "So they just go into invisibility right in front of you." "HumboldtSquidrapidlychange skin color through specialized cells." "Experts believe the strobing has a deadly purpose--it's how they communicate." "Youseethisstrobingeffect, you know that this one's distracting you while one in solid red is coming up to hit you from behind." "Butatthetime,Scott is unaware of what is happening around him." "AndasIwas filmingit," "I was so fascinated by the strobing effect," "I focused all my energy on that one animal." "I was being surrounded by a whole bunch of his buddies." "In the corner of my eye, I saw a flicker." "Iwashitintheface so hard, the camera slammed into my face and broke my nose." "Tentaclesgrabhold of his body." "Thepowerof thesearms is really shocking." "It's like being held by steel cable." "This is a soft, squishy squid." "But when they tighten up and they grab you, with all those 30,000 to 40,000 teeth inside their sucker discs, you can't pull free." "And they grabbed and dragged me down to over 50 feet, which caused me to rupture my right ear drum." "Thesquidreleasehim  as suddenly as they attack and swim away." "Scott makes his way back to the surface." "He has survived what could have easily been a fatal attack." "Andsincethattime,Ihave cables so that they can't pull me down." "I have armor." "Even with a chain mail suit, they will bite through and they will break your wrist." "So that's why I wear these aluminum gauntlets now." "Scott'sexperienceisn't unique." "Fisherman of the area have had their own encounters with el diablo rojo." "Ihavespoketoeyewitnesses that have seen Mexican fisherman being killed and eaten by the squid." "They were ravaged by the squid so badly their own families could not identify who was who." "Thoughthereareonlytwo alleged fatalities, there is no way of knowing how many attacks like this go unreported." "Whatwehaveisa mega  predator that lives amongst us, and it's just a matter of time until more people get attacked." "Underwaterpredatorslike the killer whale and Humboldt" "Squid are capable of attacking humans, but they don't do it often." "The next contender is a notorious killer." "Number three in the countdown, the Great White Shark." "The largest predatory fish on Earth, reaching lengths of more than 20 feet and weighing up to 5,000 pounds." "The Great White Shark is found in coastal waters in all the major oceans." "Sharkshavesurvived all the world's massive extinction events." "I mean, 65 million years ago, dinosaurs went extinct." "Sharks still hung around." "Ofallthepredators on the list, it's the one feared the most." "PeterBenchleywrote"Jaws"" "in 1974, and everybody in the world became scared of sharks." "Peoplehavealwayshad  an inherent fascination and also fear of sharks." "There are early records from even Aristotle talking about sharks perceived as being monsters in the ocean." "TheGreatWhiteShark's reputation is well deserved." "Thereisnothing a human can do to combat a 17 foot, 4,000 pound animal with teeth as sharp as steak knives that can swim at 35 to 40 miles an hour." "If the shark wants to eat you, it will." "ItwasaGreatWhitethat attacked the skin diver." "Nooneknowsbetterthan  recreational diver" "Jack Rochette." "In 1964, Jack is 21 and an avid scuba diver." "On January 13th, he and his friends decide to charter a dive boat to a well-known spearfishing location." "I'dhadclosecallswith  the Great Whites before, and there'd been a couple of attacks, one the year before, and you know, I mean, the thing is, you were a fool if you went to the Farallons" "anymore." "And I'd already made a promise that I'd never go back." "ButJackis persuadedbyhis friends to make one last trip." "Therewasfourofusthat went together." "Three of them ran out of air, so they all went in." "I stayed down." "I was kind of chasing this big fish, you know." "Jackisnowthe onlyoneleft in the water--or so he thinks." "Allofasudden,boom ." "I thought a mountain hit me." "A shark just grabbed me." "Fantastic force." "I mean, literally jumped out of the water with me in his mouth." "And he just shook me like a rag doll." "He had both legs in his jaws at one time." "There was blood in the water and all I could see is teeth." "Overthelastdecade, scientists like" "Dr. Neil Hammerschlag have been trying to learn more about these elusive predators." "Though he studies all species of sharks, Great Whites hold a particular fascination." "Sharkshaveagreatsense of smell." "For example, a Great" "White Shark, almost 20% of its brain is dedicated to smell alone." "A lot of these open ocean sharks are pretty much like the bloodhounds of the ocean." "GreatWhitesareaformidable foe." "Not just because of their sense of smell, but because of their extra senses." "Sharkshaveoneofthemost unique, highly developed senses." "In fact they have a couple that we don't even possess as humans." "Sensenumbersixis the ability to detect movement." "Sharks are equipped with pressure sensors, a network of vessels that can detect vibrations in the water." "It also gives them an uncanny ability to detect approaching frontal pressure systems so they can avoid severe weather." "Sense number seven is called electroreception." "Sharks are equipped with a group of sensory organs in their heads that allows them to detect electric currents emanating from living organisms." "Sharkscandetectfive one billionths of a volt." "That would be like trying to establish an electrical current with a battery and electrodes 10,000 miles apart, and it working." "Sharks are five million times more sensitive to electrical impulses than any known creature in the animal kingdom." "Allanimalsemit an electromagnetic field-- even humans." "Imean,therewas blood in the water and I'm trying to get him off my legs, you know, I mean, that's all" "I could think about." "And then I quit fighting and when I quit fighting, he released me." "I came up to the surface." "I didn't know what happened." "I didn't know if I died and went to heaven." "I started looking around and there was a very big shark." "Holy crimy, this thing's huge!" "27milesoff the San Francisco coast, a 21-year-old Jack Rochette is being attacked by a Great White Shark." "Number three in the countdown to the underwater predator deadliest to man." "Itwasthickerthan" "I was tall. 25 feet, 3 or 4,000 pounds." "I mean, this is kind of almost unbelievable." "I mean, people just can't imagine." "All I want to do is get back to the boat, you know," "I kept on trying to go towards the boat and every time I'd try to swim, my feet, you know, they weren't working right." "I wasn't going anywhere." "Thesharkis stillcircling him, baring its razor sharp teeth." "Theirteethhavetheirown nerve supply and blood supply." "And they can actually almost splay them out like cats claws and you know, manipulate like fingertips on whatever it's touching." "Teethperfectlydesigned to latch on to prey and kill." "Istartedgettingreally weak, and I'm going, oh, my God," "I can't give up now." "I mean, the shark kept circling under me." "I was like four inches away from his eye and I thought," "I'm gonna die." "And all of a sudden, man, that shark disappeared and I never saw him again." "WhydidtheGreatWhiteswim away and not finish off its victim?" "Experts have a theory." "Igotit ." "96%ofthecases, the shark bites once and never is seen again." "If they thought you were their food, they would bite you pretty hard." "Sharks, in order to be successful, they make the first bite fatal." "The way sharks eat seals or fish is not the same way they bite people." "GreatWhiteSharksattack because they're looking for food." "So what they really need in order to justify the energy expenditure of hauling a 2,000 pound body up through the water at 40 miles an hour, they need blubber." "They need a whale, they need a seal." "And when they bite a human, what is happening is an investigatory bite." "They do investigate things with their teeth." "Becausewe'veseensharks, we assume that sharks have seen us." "That's not necessarily true." "You might run into a 17 foot White Shark that has never seen a human." "Whetheranexploratorybite or a deliberate attack, the injuries are devastating." "Jack is flown by Coast Guard helicopter to a hospital in San Francisco and rushed into surgery." "TheysaidIlostlike 7pints  of blood." "I was cut on both sides of the leg without cutting this artery." "There's an artery that runs on the inside of your leg, and they say if that's cut, you're not going to live." "It was a miracle that I survived." "Jackwaslucky,but why  he was singled out by the shark that attacked him, he will never know." "Whywillasharkswim  amongst a group of people today and do absolutely nothing and that same shark will swim through another group of people tomorrow and this time it bites somebody." "That's what we don't know." "We don't know the motivation." "Theshark'sviciousbite and unpredictability earns them the title of the deep's most feared killer." "But when it comes to human fatalities, they're not as deadly as we think." "Justtoputitin perspective, last year there was only four fatal attacks reported globally." "Unfortunately for them they get a bad rap, because their fingertips happen to be their teeth." "Butthesestatistics include all shark species." "The Great White is responsible for only three fatalities in the last five years." "It pales in comparison with the next predator in the countdown." "A vicious killer with an even more powerful bite." "This one seems to enjoy the taste of human flesh." "They'reopportunistic feeders, and they don't discriminate whether you're a wallaby, a kangaroo, a pig, or indeed a human being." "They're just after something to eat." "Predatornumbertwo in the countdown is the saltwater Crocodile." "The largest living reptile on Earth, it can grow to more than 23 feet long, and weigh up to 2 tons." "Its range extends from India to Australia, where it has earned a reputation as a ruthless man-eater." "An8-year-oldgirlhas  been snatched by a Crocodile..." "DianaKerrwassleeping in a tent with her young baby and husband..." "Whena saltwatercroc dragged her away..." "Therewasthescreaming." "SaltwaterCrocodiles have a reputation of being particularly fierce and particularly dangerous." "I've spent time in the United" "States and alligators are little puppy dogs compared to the saltwater Crocodile." "Italmostgrabbedthe baby." "...Parkrangers to the scene..." "There'snowayyou wouldgo to the water's edge in northern" "Australia without being very careful about where you are." "Policedon'tholdmuchhope  the little girl survived." "SaltwaterCrocodilespossess acute hearing and vision as well as a bizarre set of receptors on their skin that enable them to sense subtle vibrations underwater." "When potential prey enters the water, the croc's pressure receptors pick up the vibrations." "Alerted to a potential meal, the croc begins a methodical study of its intended victim." "Crocodilesappearto follow routines." "They cue in to behaviors over days, if not weeks." "WhentheCrocodile is confident of its victims' routine, it is ready to make a move." "Theyglidethroughthe water." "They don't cause a ripple." "Itsvictimdoesn'tstand a chance." "Numbertwoon thecountdown to the underwater predator deadliest to man..." "Is the saltwater Crocodile." "After carefully studying its victim's routine, the giant reptile is ready to attack." "Andassoonastheanimal comes down to drink at the water's edge, it's ready there to launch itself out of the water using its tail as its main propulsive force." "If you look at the tail of a Crocodile, it's thick muscle." "And it generates huge momentum, huge force, and it can launch itself out of the water, grab the prey, and bring it back into the water." "There it will death roll it, take it under water, and most likely drown it." "SaltwaterCrocodileslatch on to prey with a bone crunching bite ten times more powerful than a lion's." "Scientistshavemeasuredbite forces of round about 10,000" "Newtons." "Now that's like putting a rock on top of you that weighs a ton." "I've been bitten by small" "Crocodiles about this size here." "One took me through the hand, and one of my students had to use a screwdriver to actually pry it off my hand." "TheAustralianCrocodile hunter, the late Steve Irwin, spent his last few years working with Craig Franklin along with a team of researchers from the Australia Zoo and the university of Queensland, to track saltwater Crocodiles." "They capture them in the wild, tag them, and track their migration patterns with satellite telemetry." "Preliminary results have been astounding--saltwater Crocodiles are efficient ocean swimmers." "We'vetrackedthem swimming over 900 kilometers." "Crocodileshavefiguredout  how to hop a ride on surface currents and roam the coasts of northern Australia, southeast Asia and India." "Silent, smart and patient, the saltwater Crocodile is one of the underwater universe's most successful stealth killers." "IfI wasdownthere," "I would never turn my back on a Crocodile." "Ever." "Sincemuchof thegiant reptile's range is in remote areas, experts believe that many human fatalities go unreported." "The data that does exist estimates some 150 attacks and 50 deaths over the past five years." "But the massive saltwater" "Crocodile is not the ultimate predator on the countdown." "That distinction falls to a very different kind of killer-- one that is almost invisible." "Number one in the countdown to the underwater universe's deadliest predator, is the Box Jellyfish." "Up to 10 feet long and weighing in at only 4 pounds, they get their name from the cube-like shape of their bell." "The biggest and most lethal species of Box Jellyfish is found in the coastal waters of Australia and the Indo-Pacific." "It may look insignificant, but what it lacks in strength, it makes up for with the deadliest venom on earth." "Theycankillafull-grown human being in less than three minutes." "Now there's no other snakes, spiders, scorpions, anything else on this planet that can do that." "Venompotenciesaremeasured on a scale using a unit called" "LD50." "According to this scale, the venom of the Box Jellyfish is eight times more potent than a scorpion's." "50 times more potent than a rattlesnake, and 150 times more potent than the common bee sting." "Along the beaches of Australia, signs warn swimmers that they swim at their own risk." "But this predator isn't confined to the coastline." "Peoplehavealwayssortof assumed that like most jellyfish, Box Jellyfish float aimlessly in the water, at the mercy of currents." "But Box Jellyfish are distinctly different because they're active swimmers." "And they have image-forming eyes." "24eyesgiveBox Jellyfish an extraordinary view of their prey." "Theycanactuallyput  themselves where they want to in the water system." "Now for an animal that doesn't have a higher processing unit like a brain, this is really quite mind-blowing as to how they're managing to do this." "Queensland,Australia." "Calliope River." "The temperature hovers around 100 degree fahrenheit." "Factory employee Jeff Shardlow and his wife Ruth sit in the shade while their children, Rachel, age 10, and Sam, age 12, play at the river's edge." "Racheltendsto squealalot when she's excited." "So she's squealing with delight and splashing and you know, having a great time." "And I do remember Jeff actually said, "I wish Rachel wouldn't squeal so much, because you never quite know if she's in trouble or if she's having fun."" "Asifon cue,Rachel's squeals of joy turn to screams of agony." "Something has grabbed hold of her legs." "Queensland,Australia." "The underwater predator deadliest to man has struck again." "Number one on the countdown, a venomous Box Jellyfish, has grabbed hold of 10-year-old" "Rachel Shardlow's legs and won't let go." "Thebestanalogy" "I've heard for it is if you take say a large kitchen knife and you heat it up over a flame so it's red hot, and you drag the back of it across your skin." "Times that by about a factor of ten and hold onto it." "So the pain doesn't come and go, it stays at that level." "ThenI sawherleg ." "Something I've never, ever seen before." "And I hope I never do again." "It's a mass of tentacles;" "completely wrapped around one of her legs." "Ittakesoneninefoot  tentacle to cause a fatal injury, and Box Jellyfish can have up to 60." "Soifyoudothemath,  potentially a really large box jellyfish has enough stinging power to kill maybe sixty grown adults." "Iimmediatelytried to pull those tentacles off with my fingers." "They just don't budge." "They're just stuck fast." "Theyhaveminutelittle stinging cells known as nematocysts." "And these stinging cells are probably only around 50 microns long;" "So a fraction of a millimeter." "But they can have as many as a million in say a square centimeter." "The pressure that these stinging cells is under is around 20,000 pounds per square inch or psi." "That's around the same pressure as what a 45-caliber bullet will fire at." "At that kind of same pressure." "They can actually go from being un-discharged to fully discharged in one 25 thousandths of a second." "It's one of the fastest cellular processes of any of the animals on earth." "Meanwhile,thecommotion on the river bank has attracted the attention of a couple camping nearby." "Andhesaidit'saBox" "Jellyfish." "And his wife has then run back and grabbed a bottle of vinegar." "TheyquicklysplashRachel's body with vinegar." "Andit'samazingthat as soon as the vinegar's on, they just let go." "Thevinegarinhibitsany more stinging cells from injecting venom, but it does nothing to stop the venom already coursing through Rachel's body." "By now she barely has a pulse." "Thevenomis reallyspecific to targeting vertebrate hearts." "It shuts down the heart muscle." "Onthewaytothehospital," "Rachel is given an anti-venom and regains consciousness." "Minutes later the pain is so intense, doctors worry she will suffer a heart attack." "Andthenit wasdecided that they would put her in an induced coma and lower her body heat to stop brain damage." "Now,it'sawaitinggame ." "Was the anti-venom administered in time?" "Thedoctorsweren't reassuring at all." "They said that we can't give you any false hopes." "IfI hadmether  at the hospital and seen the extent of her injuries," "I would not have held out a lot of hope for her survival." "Twodayslater," "Rachel comes out of the coma." "Somehow, she survives the worst" "Box Jellyfish sting in recorded history." "Therewerethebaddestones ." "I also got stung here on my arm." "Shesurvivedmoreofthese stings than anybody else has ever had on record." "And she's alive." "Where full grown men die from half the stings." "Thoughherphysicalscarsare fading, her psychological scars will take longer to heal." "When asked if she would go back in the river, she is adamant." "No,neveragain." "Maybe like just putting my feet in but no higher than like my knees." "Thereareno accuratefigures for Box Jellyfish fatalities because many attacks happen in remote areas." "However, existing data places this predator well above Killer" "Whales, Humboldt Squid, Great" "White Sharks and even above the saltwater Crocodile." "With up to 200 attacks and over 100 human fatalities in the last 5 years, the Box Jellyfish is number one on the countdown to the underwater predator deadliest to man." "But the planet we live on is in flux." "The countdown applies to the oceans we know today, but what about in years to come?" "Many experts believe the balance of power is shifting." "Ifwelookatthemodern ocean, the numbers of top predators like whales, sharks, are drastically reduced because of overfishing." "Getthatpuntgoing!" "Gotit!" "Scientistsarecapturing and tagging sharks to track their migration and impact on the ocean's ecosystems." "Whatwe'veseenis as we remove these apex predators, they tend to change the abundance and behavior of the populations below them on the food chain." "Sowhathappensisthenext level down increases, and then it feeds on the next level down." "The whole balance turns topsy-turvy, and we don't know how this works out." "But we're gonna find out in a big, rapid hurry." "Accordingtosquidexpert" "Scott Cassell, number four in the countdown, the Humboldt" "Squid, is taking advantage of this disruption in the food chain." "TheHumboldtSquidpopulation has exploded in historic proportions because its predators have been primarily wiped out." "There are hundreds of millions of these animals off the West Coast of the United States and they were never there 50 years ago." "Humboldt Squid now reach as far as Russia." "Across the Pacific, we have even found them in the Philippines." "I honestly believe it's only a matter of time until they enter into the Atlantic and the Caribbean." "And we're going to find Humboldt" "Squid and nothing else pretty soon." "Itwon'tbe longbefore there is a new top predator roaming the dark recesses of the planet's oceans, ready and willing to strike." " sync, corrected by elderman "