How much do you know about the ocean and its interactions with society? Test your Ocean Literacy and become an active part of the change spreading awareness about this fascinating world.

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Test your knowledge about the Ocean!


How much of the Earth’s surface is covered by water?

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Correct! Wrong!

Approximately 71% of the earth's surface is covered by water.

How many oceans exist on Earth?

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Correct! Wrong!

There is one ocean with many ocean basins: North Pacific, South Pacific, North Atlantic, South Atlantic, Indian, Southern, and Arctic.

How much of the ocean have humans explored so far?

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Correct! Wrong!

The ocean is the largest unexplored place on Earth – less than 20% of it has been explored. The next generation of explorers and researchers will find great opportunities for discovery, innovation and investigation.

How many species inhabit the Ocean?

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Correct! Wrong!

The number of species that live in the ocean is currently unknown. While scientists estimate that 91 percent of ocean species have yet to be classified, the global scientific community continues to research and gain as much knowledge as possible to discover this fascinating world.

What is the biggest threat for the ocean at the moment?

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Correct! Wrong!

There are 5.25 trillion pieces of plastic debris in the ocean. Of that mass, 269,000 tons float on the surface, while some four billion plastic microfibers per square kilometer litter the deep sea.

By 2050, plastic will likely outweigh all fish in the sea

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Correct! Wrong!

If we continue to pollute the ocean at the rate we are doing now, the amount of plastics and microplastics in the sea will be higher than the number of creatures living in it.

The ocean is so big and powerful that it influences:

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The interaction of oceanic and atmospheric processes controls both Earth’s weather and climate. For example, the heat transferred from the tropical ocean provides the energy that drives atmospheric circulation, including hurricanes, cyclones, and polar storms.

What is the main cause of coral bleaching?

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Correct! Wrong!

Warmer water temperatures can result in coral bleaching. When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white. This is called coral bleaching. When a coral bleaches, it is not dead. Corals can survive a bleaching event, but they are under more stress and are subject to mortality.

Why is the sea level rising?

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Please select 2 correct answers

Correct! Wrong!

Sea level rise is mainly due to glaciers and ice sheets melting and seawater temperature increase. The first adds water to the ocean and the second makes the volume of water expand as it warms.

Quiz: test your knowledge about the Ocean!

Your current knowledge about the Ocean and its interactions with society is still a bit “shallow”. Dive deeper on this Portal to find more information and become an Ocean Literacy expert! Photo by Esther Cuan on Unsplash

You are generally aware about the Ocean and its interactions with society. You can always improve your knowledge by taking a leap into the many materials and resources available on this Ocean Literacy portal. Enjoy the swim! Photo by Nicolas Leclercq

You have a deep knowledge about the Ocean and its interactions with society. You are ready to be an agent of change and help spread awareness on this amazing resource through the many materials and tools available on this Ocean Literacy portal! Photo by Sarah Lee on Unsplash