Giant kelp (IMAGE) University of Colorado at Boulder Caption Giant kelp (Macrocystis pyrifera). California, Channel Islands NMS. Credit Claire Fackler, CINMS, NOAA 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.