| Aquatic animal |
| Aquatic nesting area |
| Aquatic organism |
| Endangered tree |
| Surviving species of an otherwise extinct group |
| Aquatic dragonfly larva |
| Aquatic silvers |
| Aquatic appendages |
| Aquatic plant |
| Semiaquatic rodent |
| Part of an aquatic plant |
| A species constituting a genus |
| Yellow Pokémon species that ultimately evolves to Alakazam |
| Aquatic cereal grass |
| Animal that's unusually fast for its species? |
| Aquatic vegetation |
| A neat me (anag) — large aquatic mammal |
| Aquatic nymph |
| Aquatic mammal |
| Tiny aquatic organism |
| Endangered chimpanzees |
| Lizards' semiaquatic look-alikes |
| Ecosystem endangered by global warming |
| Aquatic one-celled plant. |
| Aquatic eagles |
| Aquatic larva |
| Aquatic zappers |
| Botanist who arranged "On the Origin of Species" to be published in the States |
| Adaptable subspecies |
| Aquatic animalcule |