Unicorn Fish (IMAGE) Bigelow Laboratory for Ocean Sciences Caption An orange spine unicorn fish feeds on a seaweed experiment in a Fijian coral reef lagoon at low tide. In a recently published study, researchers from Bigelow Laboratory documented the first clear example of sharks causing cascading changes among other sea life in this ecosystem. Credit Bigelow Laboratory for Ocean Sciences 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.