Majestic, fragile, fearsome–captured by the world’s best photographers.
Explore the world's oceans, from their prehistoric beginnings to modern-day efforts to preserve their natural wonder.
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Elephant Seal Sojourn
A rough and randy mating season for the elephant seals of South Georgia Island.
Wings of the Albatross
Carried by the longest wingspans of any bird, they soar for thousands of miles without ever setting webbed foot on land.
A dipperful of seawater reveals an amazing hodgepodge of microfauna, from gelatinous shape-shifters to a baby octopus.
Two Worlds of Tonga
The island nation embraces both age-old tradition and modern values; now democracy is astir in the South Pacific's last monarchy.
Medieval royalty coveted the Arctic whale's long ivory tusk. So do modern hunters, and that's taking a toll on the population.
Vanishing Sea Ice
Polar bears could face extinction, whales go hungry, and seals have nowhere to rest—all because of the warming Arctic.
The Big Thaw
From Greenland to Antarctica, the world is losing its ice faster than anyone thought possible. Can humans slow the melting?
Still Waters, The Global Fish Crisis
High-tech harvesting and wasteful management have brought world fish stocks to dangerous lows.
Sharks are in decline worldwide, yet they abound in the Bahamas. What makes this blue-water archipelago a sanctuary?
Lowly marine worms ply shallow shores, ocean deeps, and just about everywhere in between.
Fire meets ice on the South Sandwich Islands, a land of volcanic stream, blue icebergs, and penguins by the millions.
Big, fast, sleek, and lethal, leopard seals prowl for penguins along the edges of Antarctic ice.
Where Currents Collide
In wild tides surging through the straits of Vancouver Island, marine life grows.
Archaeologists search a North Carolina wreck for clues to the ruthless man behind the heartless pirate.
These sea monsters are no myth. Meet the ancient reptilian creatures that have inspired terrifying tales in cultures the world over.
Predators erupt from volcanic sands, and delicate pygmy seahorses hide in plain sight in Indonesia's Lembeh Strait.
Hawaii's Outer Kingdom
Wildlife as beautiful as art splashes across the remote Northwestern Hawaiian Islands.
Color: A Fish's-Eye View
Startling greens, blues, yellows, and red paint the creatures of the reefs. Scientists are learning to decipher the messages.