Photo of the Day 17 March 2008

Sea Star, Ireland, 2005
Photograph by Brian Skerry
There are some 2,000 species of sea stars, such as this striped invertebrate off Ireland's Atlantic coast, living in all the world's oceans. Sea stars are famous for their ability to regenerate limbs, and in some cases, entire bodies. They accomplish this by housing most or all of their vital organs in their arms.