What happens when diatomns die?

Answer 1

When diatoms die, their silica-based cell walls, known as frustules, often sink to the ocean floor, accumulating as sediment. This process contributes to the formation of diatomaceous earth, a sedimentary rock. Over time, these deposits can be buried and transformed, playing a role in the geological carbon cycle. The decomposition of diatoms also releases nutrients back into the water, supporting other marine life.