An _____ is a freshwater carnivorous mammal with webbed and clawed feet and dark brown fur.
A _____ is freshwater or marine or terrestrial gastropod mollusk with an external enclosing spiral shell.
A _____ is a smooth lustrous round structure found inside the shell of a clam or oyster.
A sea ______ is a shallow water echinoderm with a soft body enclosed in a thin spiny globular shell.
A ______ is a marine mammal with ivory tusks and tough hide over thick blubber.
An ______ is a marine mollusk with a rough irregular shell.
A ______ is a marine or freshwater bivalve mollusk that lives attached to rocks.
A _______ is a invertebrate with a soft unsegmented body that's usually enclosed in a shell.
A ________ is an echinoderm characterized by five arms extending from a central disk.
A __________ is a oval-bodied cephalopod with ten arms, narrow fins as long as its body, and a large calcareous internal shell.
