Body Shape | Elongated, soft-bodied, cylindrical, and tube-like |
Size | Ranges from a few centimeters to over 2 meters in length |
Color | Varies from brown, black, green, red, to shades of blue and purple |
Skin Texture | Leathery, with a rough or bumpy surface |
Tentacles | Usually 8-30 tentacles surrounding the mouth; used for feeding |
Tube Feet | Present along the body; used for movement and attachment |
Internal Skeleton | Composed of microscopic ossicles within the body wall |
Respiratory System | Uses a water vascular system with respiratory trees for gas exchange |
Digestive System | Complete, with a mouth, stomach, intestines, and anus |
Reproductive System | Separate sexes; some species can reproduce asexually by splitting |
Defense Mechanism | Can expel internal organs as a defense, which regenerate later |
Habitat | Found in oceans worldwide, from shallow waters to deep-sea environments |
Lifespan | Varies by species, generally from 5 to 10 years |