Oceanography: Scientists get 'em close-up with CaveCam.
It all started five years ago, when a yacht off the coast of Israel broke loose from its moorings. "People were running all around the beach, shouting," says oceanographer Claudio Richter of Germany's University of Bremen. "We dove in and found that a chunk of reef coral had broken apart -- and there were all these colorful sponges inside." Richter and colleagues knew they were on the verge of solving a crucial mystery: What eats the very tiniest planktons in a coral reef?