"CRABS AND SHRIMP" "A crab carrying an anemone." "Between the eyes of the shrimp, there is a thorny bone." "The heart." "Blood circulation in the leg." "A splendid fan:" "The shrimp tail." "Before and after egg laying." "Sand shrimp." "Some details of the head." "A leg." "Increasing magnification shows the structure of the tail of the sand shrimp." "The cancer pagurus." "(edible crab)" "The crab." "The mandibular system." "From one eye to the other." ""The great hold."" "Amazing customs..." "The crab waits for the female to moult before mating." "(empty shell shown on the left)" "The baby crab is very different from the adult crab." "The eye." "The power of the crab." "Struggle and claw."