Most closely related to dugongs, it was discovered in 1741 by biologist Georg Wilhelm Steller, after the expedition to North ...

A bumpy snailfish, Andean mouse opossum and ancient sea cow were just some of the many species described in 2025.

Gigantic and extinct, Steller’s sea cows would have played an important role in shaping their environment. Universal History Archive / Getty Images This article is from Hakai Magazine, an online ...

#4 Steller's Sea Cow - Extinct 1768 In 1741, Georg Wilhelm Steller documented the Steller's sea cow, an animal that Europeans discovered living only around the Commander Islands in the Bering Sea, ...

An artistic reconstruction of a herd of ancient sea cows foraging on the seafloor. In southwest Qatar, fossils of a new species of ancient sea cow, Salwasiren qatarensis, were found in 21-million-year ...

When talking about extinct animals, there a few heavy hitters: dodos, passenger pigeons, and thylacines. Though these animals are long gone, they can teach us valuable lessons about history. The ...