Sea Otter Holding Sea Urchin (IMAGE) Stony Brook University Caption When sea otters, which feed on sea urchins, were hunted to extinction in some coastal areas of the Pacific Ocean, sea urchins increased in abundance and decimated underwater kelp forests, also affecting other species that inhabit the kelp. Credit Matt Knoth, Creative Commons Attribution-ShareAlike 2.0 Generic: http://creativecommons.org/licenses/by-sa/2.0/deed.en Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.