Experiment (IMAGE) Bigelow Laboratory for Ocean Sciences Caption Laboratory experiments allowed the researchers to test how climate change has, to date, altered the intensity with which urchins are grazing on the living reefs that have underpinned Alaskan kelp forests for centuries. Credit D. Rasher Usage Restrictions Credit required 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.