While environmental factors contributed to their demise, increased contact with humans certainly did not help. In 1768, just ...

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 ...

Make way for the manatee. A surprise sea cow sighting put the brakes on a $64 million Gulf Coast construction project, according to a news release from the Texas Department of Transportation. ALSO ...