Manatee of Helena explained

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 manatees 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.^[1] Southern elephant seals historically bred on the island,^[2] and this cryptid could be a misidentification of elephant seals.^[3]

Notes and References

1. The Manatee of St. Helena. G. . RETCHING. 138. 3479. 10.1038/138033b0. Nature. 33–34. 1936. 1936Natur.138...33R .
2. Latin American Journal of Aquatic Mammals. First records of elephant seals on the Guayaquil Gulf, Ecuador: on the occurrence of either a Mirounga leonina or M. angustirostris. Alava. Juan José. Carvaja . Raúl. 195–198. July–December 2005. 4. 2. 1676-7497. PDF. Sociedade Latino-Americana de Especialistas em Mamíferos Aquáticos. Rio de Janeiro. 10.5597/lajam00086. free.
3. Karl P.N. Shuker, 2014, The Beasts That Hide from Man: Seeking the World's Last Undiscovered Animals, p.138, Paraview Press