Tagging the Largest Shark on Earth – Our Blue Planet

The size of a school bus but in many ways a mystery, whale sharks continue to fascinate. Join a team of international scientists at a renowned marine sanctuary in Cabo Pulmo, Mexico and discover how we’re trying to better understand these remarkable creatures.

#OurBluePlanet is a digital project between BBC Earth and Alucia Productions. Come join the conversation over on Twitter @OurBluePlanet