👉 Plastrons are a type of organism that lives on the surface of water. They can be found in various environments, such as lakes, rivers, and oceans. Plastrons have long, slender bodies with a thin shell covering their upper part. They have a hard outer layer called the plastron that is made of calcium carbonate, which provides them with protection from sunlight and other environmental factors. Plastrons are usually found in areas where water levels fluctuate frequently or when there is a