The ocean contains structures larger than mountain ranges.

Surfer Garrett McNamara rode a 78-foot wave off Nazaré, Portugal, in 2011 — a record at the time.

Fact #4466 · Ocean

The ocean contains structures larger than mountain ranges.

Fact #2003 · Ocean

The leafy sea dragon is so well camouflaged it was not studied alive until the 1990s.

Fact #5135 · Ocean

Coral reefs cover less than 1% of the ocean floor but support about 25% of all marine species.

Fact #5113 · Ocean

Deep-sea fish like the barreleye have transparent heads and tubular eyes that can rotate to face upward.

Fact #5104 · Ocean

Water covers more than 70% of Earth's surface.

Fact #86 · Ocean

Marine iguanas in the Galapagos are the only ocean-going lizards in the world.

Fact #5145 · Ocean

The Mariana Trench is the deepest known part of Earth's oceans.

Fact #109 · Ocean