👉 Cephalopentandra is a type of cephalopod that belongs to the family Nematoda, which includes both marine and freshwater species. These cephalopods have soft bodies with flattened heads and eyes, making them excellent for capturing prey in water. They are also known for their unique ability to use a specialized air sac called a plastron as their primary food source, enabling them to survive on short-lived foods like krill or small crustaceans.