Frogfish walk on the seafloor using their pectoral fins as legs — they're among the slowest-moving fish.

Some deep-sea octopuses brood their eggs for years.

Fact #1413 · Ocean

There are deep ocean creatures that glow.

Fact #2292 · Ocean

The world's longest mountain chain is actually underwater — the Mid-Ocean Ridge stretches over 65,000 km.

Fact #4296 · Ocean

Only about 5% of the ocean has been explored by humans.

Fact #2776 · Ocean

Dolphins surf ocean waves purely for fun — one of the clearest signs of play behavior in animals.

Fact #5979 · Ocean

Over 90% of Earth's volcanic activity occurs underwater, along mid-ocean ridges.

Fact #4774 · Ocean

The Earth's oceans absorb large amounts of carbon dioxide.

Fact #242 · Ocean

The deepest part of the ocean is deeper than the height of Mount Everest.

Fact #2495 · Ocean