The peacock mantis shrimp can see ultraviolet and infrared light and has 16 types of photoreceptor cells.

Deep-sea coral reefs exist without sunlight.

Fact #1412 · Ocean

A newborn blue whale gains about 200 pounds per day in its first year.

Fact #3662 · Ocean

Dolphins can recognize themselves in mirrors, a sign of self-awareness.

Fact #2560 · Ocean

The largest animal ever known to exist is the blue whale.

Fact #914 · Ocean

The Pacific Ocean is home to the Mariana Trench.

Fact #276 · Ocean

Bioluminescence allows some deep-sea creatures to produce light.

Fact #656 · Ocean

A hippopotamus can hold its breath underwater for several minutes.

Fact #433 · Ocean

There are more atoms in a glass of water than glasses of water in all Earth's oceans.

Fact #2341 · Ocean