There are about 1.5 million different species of phytoplankton, making up about a quarter of all marine life. Phytoplankton are the tiny plants and algae that live in the ocean and are the base of the food chain. They are responsible for creating most of the oxygen in the atmosphere, and are a major part of the ocean’s ecology.
How Many Phytoplankton Species Are There?
There are an estimated 1.5 million phytoplankton species on Earth, making up about a quarter of all living cells. They are the foundation of the marine food web, and play a crucial role in the cycling of nutrients and carbon dioxide.
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