moulting crayfish displaying unique features in freshwater habitat during daytime

moulting crayfish freshwater habitat wildlife marine life animal behavior exoskeleton shedding underwater crustacean aquatic nature vibrant colors close day river pond ecosystem features claws sensory antennae anatomy seafood environment creature natural biology fauna skin crab like ecology outdoor biodiversity exploration creatures invertebrates riverbed swamp crawfish swimming observation scientific study color patterns growth exoskeletal water quality