| Rating | Solver | Clue |
|---|---|---|
| CARAPACE | Animal shell | |
| Any hard protective covering of an animal, as the scales and plates of reptiles, shell of a lobster, etc. | ||
| SHELLFISH | Any aquatic animal whose external covering consists of a shell, either testaceous, as in oysters, clams, and other mollusks, or crustaceous, as in lobsters and crabs. | |
| CIRRIPEDIA | ...en adult, they have a calcareous shell composed of several pieces. From the opening of the shell the animal throws out a group of curved legs, ... | |
| MOLLUSCA | One of the grand divisions of the animal kingdom, including the classes Cephalopoda, Gastropoda, PteropodaScaphopoda, and Lamellibranchiata, or... | |