No. Crustaceans are sea critters with hard shells. For example, lobsters and crabs are custraceans.
Crustaceans are animals that live in the Ocean. Their skin, is their outer-shell of a body, so it would be hard and thick.
Some things that would be considered crustaceans are things that have hard shells and live in the ocean. For example, shrimp, crabs, lobster, and mantis shrimp are all crustaceans.
Chitin, N-acetylgucosamine, makes up the exoskeletons of crustaceans.
Crustaceans emerge from eggs usually as a larval stage that looks nothing like the adult, but yes, they have shells.
When crustaceans shed their shells it is called "molting."
Because they don't have shells that come off technically they are not shellfish.
Yes! A turtle is a crustacean because it has a shell! Crustaceans are animals with shells!
Shrimp like crustaceans.
Lobsters are crustaceans, and chitin is the hard polysaccharide substance that makes up the outer shell (exoskeleton) of crustaceans. Chitin also makes up the exoskeletons of other arthropods (insects, etc.). It helps to strengthen the cell walls of fungi and the shells of mollusks as well.
Not all of them have "shells," but all of them have exoskeletons, which are essentially the same thing.
Crustaceans are hard-shelled animals that normally live in the sea. Commonly known crustaceans would be crabs and lobsters.