Life began in the ocean over 3.5 billion years ago.
Most major forms of life live in the ocean.
Most volcanic activity occurs in the ocean.
There are over 6,000 known species of coral in the ocean.
The Great Barrier Reef is the largest living structure on Earth and can be seen from space.
The deep sea is the largest habitat on Earth.
The Arctic Ocean covers more than five million square miles.
Over 71% of the Earth's surface is ocean.
Celebrate World Ocean Day!