👉 Crustulina is a type of crustacean, typically found in freshwater environments such as rivers and lakes. It has a hard outer shell made of exoskeletons or plates that are covered by a protective, waterproof covering called a mantle. The mantle is composed of cells that produce enzymes to break down proteins and other organic matter. Crustulina feeds on small animals, including crustaceans, mollusks, and planktonic organisms.
