Put your ocean knowledge to the test!

Let's start easy... World's Largest Ocean?
Atlantic
Pacific
Indian
Arctic
The ocean's cover how much of the Earth's surface?
40%
60%
70%
90%
The bottom of the ocean isn't just all flat -- there are ridges, columns and deep trenches. What is the deepest known area of the Earth's oceans?
Mariana trench
Tonga trench
Puerto Rico trench
Approximately how much of the oceans have us humans explored?
Less than 5%
5-10%
25%
50%
According to the United Nations, how many shipwrecks are there on the ocean floor?
500 thousand
1 million
3 million
What causes the oceans' tides?
Gravitational pull of the sun
Orbit of the earth around the sun
Gravitational pull of the moon
Rotation of the earth
The most drastic tides occur where in the world?
Antarctica
Bay of Fundy
Mediterranean
Alaska
 
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