Mr. Big - the largest fish in the ocean. Whale sharks frequent the Galapagos to feed on plankton. This 30-35-foot whale shark was the first I've ever seen, so I was very excited (FINALLY!), even though he only stayed for a few seconds and I didn't get any great photos in the murky water. Sometimes the subject matter is compelling enough that it's OK just to document the fact that you were there, and this is one such case! Note: the diver at left provides a sense of scale.