aquatic animal
animals that partially or wholly inhabit aquatic habitats
eel
common name for a snake-like fish
marine animal
animal that partially or wholly inhabits marine habitats
aquatic mammal
mammal that lives in aquatic environments
aquatic insects
insects which live in the air or on land and breed in water
fish
vertebrate animal that lives in water and (typically) has gills
benthic animal
animal that lives at the lowest level of a body of water such as a lake or ocean