GENERAL HISTOLOGY

Detailed explanation-1: -Crustaceans (subphylum Crustacea) are members of the phylum Arthropods, including crabs, lobsters, crayfish, prawn, shrimp, krill, barnacles, woodlice and beach fleas. The most common types of crustaceans are shrimp and crab.

Detailed explanation-2: -Contrary to lobsters and rock lobsters, crayfish are freshwater crustaceans that inhabit rivers, lakes, dams, streams and ponds. A huge diversity of crayfish is found in North America but the different species of crayfish occur all around the world.

Detailed explanation-3: -Crabs. Crabs belong to the subphylum Crustacean, the largest group of marine arthropods, which also includes lobster, shrimp, and krill, a shrimp-like crustacean. Crabs move sideways, walking on four pairs of legs, and holding their two legs with claws away from their body.

Detailed explanation-4: -Barnacles are arthropods, or invertebrate animals with exoskeletons. Invertebrates are the largest animal phylum, comprising about 1 million species. Familiar members of the arthropod family include scorpions, spiders and crabs.

Detailed explanation-5: -Barnacles (balanus glandula) are sticky little crustaceans related to crabs, lobsters, and shrimps. Those aren’t dragon claws-they’re gooseneck barnacles! These filter feeders are found in the rocky tide pools of Olympic Coast National Marine Sanctuary.