👉 Byssoids are a type of animal in the phylum Echinodermata, which includes jellyfish and sea urchins. They are characterized by their large, flexible bodies, which they use to move through water and absorb nutrients from the ocean floor. Byssoids have a long, thin body that is often made up of multiple layers of soft tissues arranged in a spiral pattern, allowing them to move with great speed. They can also be found on the surface of the ocean,