It’s the largest shark in the ocean, but one of the least understood. In an attempt to solve some of the whale shark’s most enduring mysteries, scientists are diving into the waters around the Galapagos Islands to try to answer basic questions about its life cycle. It’s the biggest fish in the sea. But unlike some of their ferocious cousins like the great white, whale sharks are gentle giants, harmful only to the tiny fish and plankton they eat. They weigh up to about 40,000 pounds and typically grow between twenty to fifty two feet. That’s bigger than a double decker bus. But these majestic creatures are vulnerable.