The ocean is filled with microscopic organisms called Zoo plankton. These organisms are fundamental to the way the ecosystem and atmosphere function.
Source: Britannica
1. Plankton are at the bottom of the food chain in the ocean; little fish, crustaceans, shellfish, and even whales feed on plankton. Everything that doesn't directly eat plankton, depends on them indirectly through their own prey.
2. Plankton produce 50% of the world's oxygen!!!!
WARNING: Due to ocean acidification, plankton population levels are decreasing according to a report by MIT and the University of Alabama and many types of plankton will be eradicated by the year 2100. The report also suggests that the ocean will drop to a 7.8 pH acidity level.
That's interesting I would've never thought that plankton makes oxygen.
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