👉 Hydropolyp is a type of organism that lives in freshwater bodies such as lakes, rivers, and streams. They are aquatic organisms with a unique structure called a hydropolium, which consists of a complex network of tube-like structures called hydroliths. These hydroliths are made up of tiny particles of calcium carbonate, which is commonly found in the sediment or in the water column. Hydropolyps have a symbiotic relationship with certain types of plants