| OSTRACOD | Minute crustacean with a transparent two-valved carapace (8) |
| OSTRACODA | Subclass of Crustacea in which the body is enclosed in a transparent two-valved carapace |
| COPEPOD | Minute crustacean with oarlike feet |
| DAPHNIA | Minute crustacean; an aphid (anag.) |
| TORTOISE | One of a "creep" of chelonian land reptiles with a beak, carapace and elephant-like legs, such as Charles Darwin's galapago, "Harriet" (8) |
| COQUILLE | French for "shell", hence seafood served in a scallop's fluted fan-like carapace; a dish or pastry case shaped like said shuck; or, a pat of butter (8) |
| AMPHIPOD | Member of an order of malacostracan crustaceans with no carapace (8) |
| EGGSHELL | An oological carapace whose colour, fragility or surface is likened to off-white, paint, paper or porcelain (8) |
| TONEDOWN | Moderate carapace supporting tons? (4,4) |
| COVERING | Carapace |
| ALTHORNS | Valved instruments |
| ALTOHORN | Valved brass instrument |
| LANTERN | A lamp with a transparent glass case protecting a candle flame |
| CRAB | Crustacean with a carapace |
| SHELL | A structure such as a coconut's husk, a pea's pod, a pie's crust, a snail's exoskeleton or tortoise's carapace; or, a class that originally met in the apse of Westminster School (5) |
| EEL | Fish with a transparent larval form |
| SALPA | Marine creature with a transparent, saclike body |
| SHRIMP | A decapod crustacean with a slender flattened body, long tail and a single pair of pincers (6) |
| LOBSTER | Edible marine crustacean with a hard shell, two strong claws and eight legs |
| PCRAB | Marine arthropod with a curved carapace and a long tail-spine |
