Freshwater Echinoderms
Freshwater echinoderms are a diverse group of aquatic organisms that belong to the phylum Echinodermata. These organisms are characterized by their radial symmetry, calcareous exoskeletons, and tube feet used for locomotion and feeding. Unlike their marine counterparts, freshwater echinoderms are adapted to living in freshwater habitats such as rivers, lakes, and streams. They play important roles in freshwater ecosystems as scavengers, filter feeders, and predators. Some common examples of freshwater echinoderms include the freshwater sea star (Asterina pectinifera) and the freshwater cucumber (Eupentacta quinquesemita).