| Austral Pillwort is at first appearance a very unfern-like, semi-aquatic fern, resembling more a small fine grass. |
| The councillor also suggested the animal could be a plant-eating semi-aquatic rodent from South America called a Coypu. |
| Sauropods were long believed to be semi-aquatic swamp wallowers, relying on the buoyancy of water to support their massive bodies. |
| Many species are fully terrestrial, many are arboreal, and at least one species, yapoks, is semi-aquatic. |
| North American river otters are semi-aquatic mammals, with long, streamlined bodies, thick tapered tails, and short legs. |
| Nutria are large hystricomorph South American rodents adapted to semi-aquatic environments. |
