Ocean Giants: The Largest Animals on Earth | 4K Documentary

Ocean Giants is a calm 4K documentary about the largest animals on Earth, from humpback whales and whale sharks to manta rays, orcas, sperm whales and the blue whale. How does the ocean build, and feed, the largest animals known to have lived? In this film you will discover: • Why the biggest animals in the sea live on some of the smallest: krill, copepods and plankton • How a whale shark tagged off Panama travelled more than 20,000 kilometres across the Pacific • Why hundreds of reef mantas gather in Hanifaru Bay, in the Maldives • How orcas off northern Norway herd herring into a ball and stun them with their tails • Why a blue whale's heart, about 180 kilograms, is not "the size of a car" • How whales fertilise the sea through the "whale pump", and feed the deep even after death Chapters 00:00 Humpback whales: the giants return 10:21 Whale sharks: the largest fish 17:35 Manta rays: wings over the reef 25:07 Walruses, elephant seals and sea lions 32:53 Orcas: the hunters of Norway 38:54 Sperm whales: hunters of the deep 42:43 The blue whale 48:18 How the giants feed the sea