Diving with predators

Hold that pose: Sperm whales are the largest living predator on the planet

Diving to depths of three kilometres to feed on giant and colossal squid also makes them the deepest diving mammal.

The clicking sound they make is also the loudest sound made by any animal.

Male whales can grow up to 20.5 metres or 67 feet long and can weigh up to 57,000 kilos.