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Ocean Facts
373 facts in Ocean. Click any fact to see its full page.
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The Pacific Ocean is bigger than every continent on Earth combined.
The Great Pacific Garbage Patch is a collection of floating debris in the North Pacific that covers an area twice the size of Texas.
El Nino and La Nina are climate patterns caused by changes in Pacific Ocean temperatures that affect weather worldwide.
Sea pigs are deep-sea relatives of sea cucumbers that walk along the ocean floor on tube-like legs.
The flamboyant cuttlefish is one of only three known venomous cephalopods and walks along the ocean floor instead of swimming.
The leafy sea dragon is so well camouflaged that it is nearly invisible among seaweed.
The bobbit worm buries itself in the ocean floor and ambushes prey with jaws so powerful they can snap fish in half.
Brine pools on the ocean floor are so salty that they are toxic to most marine life, creating an underwater 'shoreline' effect.
Xenophyophores are giant single-celled organisms found on the deep ocean floor that can grow up to 8 inches across.
The zombie worm, or Osedax, feeds on whale bones on the ocean floor by secreting acid to dissolve them.
Black smokers are hydrothermal vents that spew superheated water rich in minerals, creating chimney-like structures on the ocean floor.
The deepest fish ever recorded is the Mariana snailfish, found at 26,831 feet in the Mariana Trench.
The Hadal zone, below 20,000 feet in ocean trenches, is home to unique species found nowhere else on Earth.
Japan consumes about 80% of the world's total bluefin tuna catch.
The pink sand beaches of the Bahamas get their color from tiny red organisms called foraminifera.
The Great Blue Hole off the coast of Belize is a giant marine sinkhole over 1,000 feet across and 400 feet deep.
The Sargasso Sea in the North Atlantic is the only sea without a land boundary, defined entirely by ocean currents.
The fangtooth fish has the largest teeth of any fish relative to its body size and lives in some of the deepest parts of the ocean.
A new species of marine life is discovered roughly every two weeks.
The Pacific Ocean is shrinking by about an inch per year as the Atlantic Ocean slowly widens.
The world's oceans contain an estimated 171,000 pieces of plastic per square mile of surface water.
The Dumbo octopus, named for its ear-like fins, lives at depths of up to 13,000 feet.
The ocean absorbs about 90% of the excess heat generated by global warming.
The Antarctic krill population weighs more than the total weight of all humans on Earth.
The giant oarfish can grow up to 36 feet long and is believed to be the source of many sea serpent legends.
Phytoplankton in the ocean produce about half of the oxygen we breathe.
The ocean contains approximately 97% of all water on Earth.
The vampire squid lives in the oxygen minimum zone of the deep ocean and can turn itself inside out to display bioluminescent tips.
Underwater rivers and lakes exist on the ocean floor, formed by dense brine that flows along the seabed.
The ocean's average depth is about 12,100 feet — deep enough to submerge most skyscrapers.
The oldest living organism is a colony of seagrass in the Mediterranean estimated to be 100,000 years old.
There are more than 30,000 islands in the Pacific Ocean.
The Ring of Fire encircles the Pacific Ocean and is home to about 450 volcanoes.
The ocean's twilight zone, between 660 and 3,300 feet deep, contains more fish by mass than all other ocean zones combined.
The Sargasso Sea is the only sea in the world without a land boundary — it is defined by ocean currents.
Whale sharks are the largest fish in the world, growing up to 40 feet long, but they eat only tiny plankton.
The blue dragon sea slug floats upside down on the ocean surface and stores the stinging cells of its prey for its own defense.
The ocean contains an estimated 3 million shipwrecks.
Deep-sea gigantism is a phenomenon where creatures in the deep ocean grow much larger than their shallow-water relatives.
The ocean covers about 71% of the Earth's surface and contains 97% of the planet's water.
Hydrothermal vents on the ocean floor can reach temperatures of 750 degrees Fahrenheit and support unique ecosystems.
The coelacanth, a prehistoric fish thought to have been extinct for 65 million years, was rediscovered alive in 1938.
Underwater waterfalls exist — one near Mauritius creates the illusion of a massive waterfall beneath the ocean surface.
The deepest point in the ocean is the Challenger Deep in the Mariana Trench, at about 36,000 feet below sea level.
The ocean floor has mountain ranges, volcanoes, and trenches that rival any landscape found on land.
The blobfish looks like a normal fish at deep-sea pressure — it only looks gelatinous when brought to the surface.
An estimated 80% of all life on Earth is found under the ocean surface.
There is a point in the Pacific Ocean called Point Nemo that is farther from land than any other place on Earth — the nearest humans are often astronauts on the ISS.
The Dead Sea is so salty that you can float on its surface without any effort.
Marine snow — a constant shower of organic debris — falls through the deep ocean like underwater snowfall.