Whale Shark (IMAGE) Woods Hole Oceanographic Institution Caption Whale sharks (Rhincodon typus), which grow more than 30 feet long, are the largest fish in the world's ocean. Little is known about their movements on a daily basis or over years. Credit Photo by Simon Thorrold, Woods Hole Oceanographic Institution Usage Restrictions With proper credit only 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.