The Manatee of Helena is a creature believed to have once inhabited the coast of Saint Helena, an island supposed to be largely populated by

manatee Manatees (family Trichechidae, genus ''Trichechus'') are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows. There are three accepted living species of Trichechidae, representing three of the four living speci ...

s during the days of colonization. Unlike known manatee species, Helena manatees were semi-aquatic, often coming onto land like seals. There is no evidence to prove its existence, and only two eyewitness accounts have been reported. Elephant seals historically bred on the island.

References

Fauna of Saint Helena Legendary mammals Purported mammals Sirenians {{Legendary-creature-stub