Like giant stone monoliths, pods of sperm whales sleep vertically in the water column.
A totally otherwordly presence, their massive bodies floating in suspended grace.
Our oceans are filled with nearly 100 species of cetacean - warm-blooded, air-breathing mammals like bottlenose dolphins and orcas and humpback whales.
But sperm whales are among the strangest of this group.
Sperm whales are the largest toothed predators in the world.
They live in tight social groups and are one of the most widely distributed marine mammals on the planet.
They live anywhere there is deep water, from the poles to the equator.
They venture deeper than almost any other mammal - plunging into the dark abyss in search of their elusive and giant squid prey.
They dive so deep, their lungs collapse.
And yet, they can stay underwater for nearly two hours.
