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Eutrophication is when a large amount of nutrients enters the water and causes a sharp increase in the algae population, which then rapidly die off once these nutrients are used up, creating low-oxygen conditions. Eutrophication often happens in areas where fertilizer run-off from agriculture gets into the water. In extreme cases, it can kill off a large area of marine life from lack of oxygen.
Hawaiʻian fishponds or loko iʻa, are a sophisticated method for raising a steady source of food that is accessible during storms and high surf when fishing can be dangerous. Perpetuating traditional fishpond practices is important to create more sustainable food resources in Hawaiʻi and ensure that such advanced cultural knowledge is not lost
Ocean phytoplankton produce at least half of the oxygen that we breathe. Though small in size they are able to produce as much oxygen as all of the land plants on earth combined. While trees and plants usually get all the credit for our oxygen, we actually should be thanking our marine plankton!
Did you know that cold water is denser than hot water? Cold water sinks down and warm water rises up. These properties cause many of the large scale ocean currents as cold water in higher latitudes sinks to the bottom of the ocean and then moves toward the equator.
You may have known that corals are living animals but did you know that they have a partnership with algae living inside of them? Algae known as zooxanthellae (zo-zan- thel-ay) live in the coral’s tissue. The coral gives the algae protection and nutrients while the algae provide food and oxygen to the coral in return. When two living organisms help each other out like this we call it a symbiotic relationship.
Photo: NCAR Science Daily March 6, 2017 New research findings show that as the world warmed millions of years ago, conditions in the tropics may have made it so hot some organisms couldn't survive. Longstanding theories dating to the 1980s suggest that as the rest of Earth warms, the tropical temperatures would be strictly limited, or regulated by an internal 'thermostat.' These theories are controversial, but the debate is of great importance because the tropics and subtropics comprise half of Earth's surface area, greater than half of Earth's biodiversity, as well as over half... (more)