Species that live underwater. For species that can survive on land as well as water, see Amphibious species.
“Mermen were a race of aquatic beings that lived in the seas of Earth. Mermen had a fish's tails...Merman
“The Owse were an aquatic jellyfish-like species native to the planet Kaesov. Due to the position...Owse
“A species of parasite was found in the Mariana Trench after it escaped the destruction of its...Parasite (Submission)
“Water Hag was a term humans used to describe an advanced race of alien creature native to the...Water Hag
“The Waterhive were creatures composed of water. In their true form, they resembled limpets with...Waterhive
This category has only the following subcategory.
- [×] Cephalopod species (10 P)