The Atlantic Ocean is widening by about 2.5 cm per year as tectonic plates spread apart.

Some deep-sea species have extremely slow metabolisms.

Fact #1403 · Ocean

More than half of the world's coral reefs have been lost since the 1950s due to warming and acidifying oceans.

Fact #4292 · Ocean

Lake Malawi contains more species of fish than any other lake in the world.

Fact #4799 · Ocean

Clams have been found alive at the bottom of the Mariana Trench.

Fact #5140 · Ocean

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 #1861 · Ocean

The Mariana Trench is so deep that Mount Everest could be submerged in it with over a mile to spare.

Fact #4253 · Ocean

The Arctic Ocean may be ice-free in summer within decades, creating new shipping routes and accelerating warming.

Fact #5218 · Ocean