The Ocean

What happens if you drink seawater? "Human kidneys can only make urine that is less salty than salt water. Therefore, to get rid of all the excess salt taken in by drinking seawater, you have to urinate more water than you drank. Eventually, you die of dehydration even as you become thirstier."

Why is the ocean important to us? "They flow over nearly three-quarters of our planet, and hold 97% of the planet's water. They produce more than half of the oxygen in the atmosphere, and absorb the most carbon from it."

How is the ocean current related to climate? "Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface."

Zones of the Ocean - Sunlit Zone, gets the most sunlight. Twilight Zone, no plants, mostly jellyfish. Midnight Zone, animals here "lack eyes". Abyss, most animals here don't have a backbone. Hadal Zone, temperature of water is barely above freezing.

The deeper the ocean gets, it gets colder, and the pressure is much stronger

What resources do we use from the ocean? "It provides a treasured source of recreation for humans. It is mined for minerals (salt, sand, gravel, and some manganese, copper, nickel, iron, and cobalt can be found in the deep sea) and drilled for crude oil. The ocean plays a critical role in removing carbon from the atmosphere and providing oxygen."

Credits:

Created with images by Pok_Rie - "water sunrise ocean" • lpittman - "divers underwater ocean" • Kyle Taylor, Dream It. Do It. - "The Great Barrier Reef - 164" • Pexels - "beach ocean people"

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