Sea Urchin Regeneration May Help Us Understand Aging

Sea urchin

The variegated sea urchin typically lives for about 4 years in the wild. The close-up view shows the sea urchin’s spines and tube feet that regrew after being removed 15 days earlier. Credit: Helena Reinardy (left) and Andrea Bodnar (right), Bermuda Institute of Ocean Sciences.

If you’ve ever been to the beach and walked around the rocks during low tide, you’ve probably seen a sea urchin. You may not have known that sea urchins found along the Pacific shore can live for more than 100 years. What’s even cooler is that, as they age, they don’t seem to lose their abilities to reproduce or regenerate damaged body parts. While different species of sea urchins have varying life expectancies, they all seem to share fountain-of-youth characteristics. For these and other reasons, scientists study sea urchins to investigate aging and other basic life processes. Continue reading