The crayfish must shed its hard exoskeleton in order for its soft body to grow and mature. Baby crayfish molt daily, a pattern that slows down as the crayfish ages. To produce a new exoskeleton, the crayfish ingests calcium, and when the time comes, finds a safe place where it can shed its old shell. The crayfish is then vulnerable to predators until its shell hardens. It will eat its old shell to get the calcium it needs to harden its new exoskeleton. The information programmed in the crayfish’s DNA was placed within the original created kind by its Creator.
CLASS: Malacostraca (crabs, krill, pill bugs, shrimp, and relatives)
ORDER: Decapoda (crabs, shrimp, and relatives)
FAMILY: Three different families—Astacidae, Cambaridae, and Parastacida
GENUS/SPECIES: Over 500 species
Size: Average 3 in (7.5 cm)
Diet: Snails, algae, insect larvae, worms, and plants
Habitat: Found mostly in freshwater worldwide; a few live in saltwater