NOAA National Ocean Service

12 facts cite this source

Earth & Climate Oceans

Earth has only one ocean — and it's mostly unexplored

70 sec read

Earth & Climate Oceans

A drop of seawater takes about 1,000 years to circle the globe

70 sec read

Nature & Animals Mammals

The platypus is a venomous, egg-laying mammal that hunts by electricity

75 sec read

Earth & Climate Ecosystems

The Great Barrier Reef is the largest structure built by living things

75 sec read

Earth & Climate Oceans

There is more gold dissolved in the oceans than has ever been mined

70 sec read

Nature & Animals Mammals

Bowhead whales may live more than 200 years

45 sec read

Nature & Animals Marine Life

The box jellyfish is the most venomous animal in the sea

40 sec read

Earth & Climate Oceans

The deepest point in the ocean could swallow Mount Everest

40 sec read

Geography Borders & Maps

The International Date Line zigzags to keep countries whole

45 sec read

Earth & Climate Oceans

The ocean holds 97 percent of all the water on Earth

30 sec read

Earth & Climate Oceans

At least half the oxygen you breathe comes from the ocean

40 sec read

Earth & Climate Natural Disasters

In deep water a tsunami races along as fast as a jet airliner

45 sec read