Darwin's Arch (image) PeerJ Share Print E-Mail Caption A natural rock formation known as "Darwin's Arch" protrudes from the water southeast of Darwin Island. The waters around the small, remote islands of Darwin and Wolf contain the largest biomass of sharks on the planet. Credit Photo by Neil Gelinas/National Geographic, from 'National Geographic Pristine Seas' Usage Restrictions None Share Print E-Mail 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.