Dolphins on the Hunt (04:11)
The center of the Atlantic appears like a desert with no animals or seafloor. Blue jack mackerel shoal in the area to breed, attracting common and spotted dolphins that work together to devour the fish.
Mid-Atlantic Ridge (03:20)
A volcanic eruption 60 million years ago created the Atlantic Ocean and the longest mountain range in the world. West of Portugal, explorers submerge themselves into the ocean to study the wildlife of the ridge.
Seafloor Food Chain (03:49)
At the Mid-Atlantic Ridge, the seafloor is empty and muddy, but life teems at the foothills. Sea sponges and corals litter the ocean floor. Camouflaged fish, sharp squid, and sharks prey on smaller creatures.
Ocean Desert (03:42)
The upwelling current of the deep ocean brings nutrients and creatures. A strawberry squid at the bottom of the ocean hunts with its different sized eyes. Sperm whales feed on deep sea squid and sharks.
Island of Ascension (02:20)
Volcanic forces in parts of the Atlantic drove mountains to the surface. The Island of Ascension in the South Atlantic houses an ecosystem of black trigger fish that eat most anything. On the island, volcanic rocks litter the ground and fresh water is nowhere to be found.
Ascension Island Crabs (03:00)
The largest native animals on Ascension Island are crabs. They lay their eggs in seawater every year, traveling to the water at nightfall.
New Moon Night (02:05)
At nighttime, the trigger fish sleep with few predators to worry about. They protect themselves from being swept away by the currents by wedging themselves. During the new moon when the fish are asleep, the crabs creep into the ocean, instinctively knowing the tides will carry their young far out to sea.
Fernando de Noronha Geography (01:55)
Fernando de Noronha is an island on an offshoot of the Mid-Atlantic Ridge, 4,000 meters above the sea floor. Its proximity to Brazil provides more wildlife than on Ascension Island.
Spinner Dolphins (03:15)
The steep sides of Fernando de Noronha push nutrient-rich currents from the sea to the surface; many spinner dolphins make the waters their home. Older male spinner dolphins guard against tiger sharks and other predators while the rest of the pod socializes.
Fernando de Noronha Wildlife (03:52)
Fernando de Noronha attracts tiger sharks. A guarding spinner dolphin will attempt to lure the tiger shark away from the group and spin, creating a loud splash. Deep in the sea Hoff crabs live near vents that shoot out sulfur and hot water.
South Sandwich Islands (01:56)
The island chains created by tectonic forces are volcanic, bare, and inhospitable. Despite this, 3 million chinstrap penguins arrive yearly to breed, forming one of the largest penguin colonies in the world.
Falkland Islands Forests (02:32)
The circumpolar current of the Antarctic stirs nutrients into the waters near the Falkland Islands in the South Atlantic. The current and sunlight create one of the most prolific kelp forests on Earth. Many animals like manatees and jellyfish call the forests home.
Gentoo Penguins (03:24)
The penguins feed on the kelp forest's wildlife and swim back to their colonies to breed on the Falkland Islands. Southern sea lions in the shallows of the water prey on the penguins.
South Georgia Island (03:36)
The circumpolar current brings life to the South Atlantic. Commerson's dolphins feed on fish and humpback whales feed on krill. South Georgia is the top of the underwater mountains and is home to nearly 1,500 species of wildlife.
Wandering Albatross (02:47)
Industrial scale fishing beginning in the 1960s had a devastating effect on the South Georgia Island. Today, regulations reduce albatross deaths and fishermen collect data for scientific purposes.
Mass of Marine Mammals (02:52)
The Atlantic fur seal was hunted nearly to extinction. Today, 3 million of them breed and play on South Georgia. Nearly 500,000 southern elephant seals join them.
Credits: Mountains of the Deep (South)—Atlantic: Wildest Ocean On Earth (00:40)
Credits: Mountains of the Deep (South)—Atlantic: Wildest Ocean On Earth
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