Whale Shark (Butanding). Would you like to meet the biggest fish in the world, a shark which can grow up to 9 meters in length? The Philippines is one of the countries where such a meeting is possible. Meeting whale sharks in the underwater-world became an attraction for many divers in the nearby seas of the southeastern part of Luzon. Whale sharks live in tropical, warm waters all around the world. They live on plankton and krill.