The Amazonian Manatee, Trichechus inunguis, is native to the Amazon Basin of Brazil, Colombia, Ecuador, Guyana, and Peru.

Once known to occur in large herds in freshwater river systems, the Amazonian manatee has suffered from extensive hunting by subsistence and commercial hunters. Threats also include accidental drowning in commercial fishing nets and habitat degradation caused by deforestation along waterways.

Read more: Encyclopedia of Life

Image by Caryn Self-Sullivan (c) Doug Perrine, via World Register of Marine Species

Hundreds of walruses have found themselves a new home on an iceberg 20 miles off shore. The giant marine mammals pile onto the ice and huddle together as they relax on their island. They are taking a break from hunting in the Chukchi Sea, 20 miles off the coast of Alaska, and the moving ice even helps them find their meals.

Picture: Solent/Steven Kazlowski/SeaPics