|Steller's Sea Cow|
A model of Steller's Sea Cow.
Steller's sea cow (Hydrodamalis gigas) is an extinct sirenian described by Georg Wilhelm Steller in 1741. It had a fluke like tail for swimming, cause it's an extinct cousin of both the dugong and the manatee. Steller's sea cow lived in a northwest part of the northern hemisphere and lived in a big group.