Calcareous Nannoplankton

Calcareous nannoplankton are tiny marine microorganisms, primarily composed of calcium carbonate, that float in the ocean. They are a type of phytoplankton, meaning they use sunlight to create energy through photosynthesis. These organisms play a crucial role in the ocean ecosystem by serving as a food source for larger marine animals and contributing to the carbon cycle. Their fossilized remains accumulate on the ocean floor, providing valuable insights into Earth's climatic history and helping scientists understand past environmental changes. Overall, calcareous nannoplankton are vital to marine life and the planet's ecological balance.