Ocean Fun Facts
About this percentage of Earth's surface is covered by oceans.
What is about 71%?
This vehicle allows scientists to explore deep beneath the ocean's surface.
What is a submarine?
The rise and fall of ocean water is mainly caused by the gravitational pull of this celestial body.
What is the moon?
This is the largest ocean on Earth.
What is the Pacific Ocean?
This largest animal on Earth can grow longer than three school buses.
What is the blue whale?
This substance makes ocean water salty.
What is salt?
This famous ship sank in the North Atlantic in 1912.
What is the Titanic?
These underwater mountains can form new islands when they rise above the ocean's surface.
What are volcanoes?
This ocean lies between Africa, Asia, and Australia.
What is the Indian Ocean?
This eight-armed cephalopod is known for squeezing through tiny spaces.
What is an octopus?
Scientists estimate that this percentage of the ocean remains unexplored.
Instruments called these use sound waves to map the ocean floor.
What is sonar?
Tiny drifting organisms that form the base of many ocean food webs are called this.
What are planktons?
This imaginary line divides Earth into the Northern and Southern Hemispheres and crosses the Atlantic, Pacific, and Indian Oceans.
What is the equator?
These marine mammals use echolocation to find food and communicate.
What are dolphins?
This natural phenomenon causes glowing waves when microscopic organisms emit light.
What is bioluminescence?
This underwater robot can explore places too deep or dangerous for humans.
What is an ROV (Remotely Operated Vehicle)?
This process occurs when corals lose the algae that give them their color.
What is coral bleaching?
This is the deepest known part of the world's oceans.
What is the Mariana Trench?
This slow-moving fish is the largest fish species in the world.
What is a whale shark?
The pressure at the deepest part of the ocean is over this many times greater than at sea level.
What is more than 1,000 times?
The deepest known point of the seabed on earth.
What is the Challenger Deep?
This gas dissolves into seawater and contributes to ocean acidification.
What is carbon dioxide?
This current helps keep Western Europe warmer than many places at similar latitudes.
What is the Gulf Stream?
This deep-sea fish is famous for the glowing lure that hangs above its mouth.
What is an angler fish?