Seven Natural Wonders of the Arctic, Antarctica, and the Oceans
What a showcase of Earth's most extreme, untamed frontiers! From frozen, mile-thick polar ice sheets to smoking-hot chimneys on the ocean floor:
*The Mariana Trench, the deepest point on Earth's surface.
*The Gulf Stream, the global ocean current that moves massive amounts of water around the world.
*Hydrothermal Vents, the undersea chimneys teeming with exotic, heat-tolerant life.
*The Great Barrier Reef, the world's largest coral reef system.
*The Bay of Fundy, venue of the world's most extreme tides.
*The North Pole, Earth's ice-locked geographic northern apex.
*The South Pole, the wind-swept frozen desert at the bottom of the world with ice 2-miles thick.