| PHY | hydras |
|---|---|
| PHY | a phylum in the kingdom Protoctista |
| PHY | comb jellies |
| PHY | tiny marine organisms each the size of a period found in great numbers on lobsters' lips |
| PHY | radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers |
| PHY | coextensive with or a subphylum of Bryozoa |
| PHY | sometimes considered a subphylum of Bryozoa |
| PHY | gastropods |
| PHY | unsegmented worms: roundworms |
| PHY | proboscis worms |
| PHY | proboscis worms |
| PHY | small phylum of wormlike marine animals |