The blue whale is the largest animal that has ever existed, weighting as much as two thousand people together.

The skull of a newly discovered species of giant ichthyosaur is shedding new light on the marine reptiles’ rapid growth into behemoths.

Whales were hunted nearly to extinction. A new report shows how important they are for healthy oceans.

At 8 a.m., veteran lobster diver Michael Packard entered the water for his second dive of the day. Then something truly biblical happened.

The dog was in a ruff spot, having been abandoned outside a Sacramento animal shelter, before she was adopted by Dr. Deborah Giles