| Word | Definitions | Synonyms |
|---|---|---|
| caducean | (adjective) of or relating to a caduceus | - |
| cetacean | (adjective) of or relating to whales and dolphins etc | Synonyms: cetaceous |
| crustacean | (adjective) of or belonging to the class Crustacea | Synonyms: crustaceous |
| subocean | (adjective) formed or situated or occurring beneath the ocean or the ocean bed | Synonyms: suboceanic |