The Gulf Stream transports warm water northward in the Atlantic.
Question 6 / 10
What gas do oceans absorb heavily from the atmosphere?
1
Nitrogen
2
Carbon dioxide
3
Helium
4
Methane only
Oceans are a major carbon sink but acidification affects marine life.
Question 7 / 10
Which marine mammal is the largest?
1
Orca
2
Blue whale
3
Humpback whale
4
Walrus
Blue whales feed on krill despite their massive size.
Question 8 / 10
Bioluminescence in the deep sea is used mainly for what?
1
Photosynthesis
2
Predation and communication
3
Swimming speed
4
Salt regulation
Many mesopelagic species produce light via chemical reactions.
Question 9 / 10
Which ocean is the smallest?
1
Indian
2
Arctic
3
Southern
4
Atlantic
The Arctic Ocean is the smallest and shallowest.
Question 10 / 10
Tsunamis are often caused by what at sea?
1
High tides
2
Undersea earthquakes
3
Hurricanes
4
Moon phases
Seafloor displacement from quakes displaces massive water volumes.
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Learn more: Ocean Wonders Trivia
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