Water snake
- Acrochordidae
- Afronatrix
- Agkistrodon piscivorus
- Boidae
- Cerberus rynchops
- Colubridae
- Enhydris enhydris
- Enhydris plumbea
- Fowlea
- Fowlea piscator
- Green anaconda
- Helicops (snake)
- Helicops angulatus
- Homalopsidae
- Homalopsis buccata
- Hydrodynastes
- Hydrodynastes gigas
- Hydromorphus
- Hydrops (snake)
- Liophis
- Liophis cobellus
- Liophis reginae
- List of marine snakes
- Natrix natrix
- Natrix tessellata
- Nerodia
- Opisthotropis
- Ptychophis
- Sinonatrix
- Sinonatrix percarinatus
- Trimerodytes
- Viperidae