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Plankton refers to the diverse community of organisms that inhabit the water column, unable to effectively propel themselves against currents and tides. These microscopic and often tiny creatures play a critical role in aquatic ecosystems, particularly in marine environments. They are primarily classified into two groups: phytoplankton, which are plant-like organisms capable of photosynthesis, and zooplankton, which are animal-like organisms that feed on other plankton or organic matter. Phytoplankton serve as the base of the marine food chain, providing sustenance for various zooplankton species, which in turn become food sources for larger animals like fish and whales. Plankton's collective biomass significantly contributes to global carbon fixation, making them essential players in the Earth's climate regulation. Despite their diminutive size, plankton have a profound impact on our planet's health and biodiversity.