Which surface of a starfish is covered by tube feet

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Do starfish walk? How do starfish stay on the rocks? How does a starfish obtain oxygen? Do starfish have tube feet?

Is a trench that runs along the ventral surface of the starfish's arms and holds the tube feet? What surface of a star fish is covered with tube feet? How does a starfish walk? How does a starfish move?

What is the locomotion of a starfish? Where does water leave a starfish? Locomotory organ of starfish? What does the starfish use its tube feet for? Do starfish taste things through their feet? What is the starfish structure used for locomotion? Where does water exit a starfish? Eye: The common sea star has five eye spots on the tip of each of its five rays. These eye spots can see shadows and light. Tube feet can be visible from the aboral surface as they stretch out to move the sea star from one location to another.

The surface of the tube feet can exchange gases and nitrogen waste. Rays: Common sea stars have five rays, unless they lose one or grow an extra. Most sea stars have rays, but sunflower sea stars can have up to rays. If a sea star loses a ray to a predator or an accident, it can grow a new one back again. Starfish, more accurately called sea stars, are not really fish but echinoderms, which means "spiny skin" in Greek.

True to their name, starfish really are covered in a spiny skin on their top sides, which is made up of two different parts: dermal branchiae and pedicellaria. Their undersides are covered with tube feet, or podia. Two different types of starfish exist: those belonging to the taxonomic class Asteroideas, which are true sea stars and sun stars, and those belonging to the taxonomic class Ophiuroideas, which are basket and brittle stars.

Over 2, species are found worldwide, all of which live in marine habitats. They come in all shades, but usually are brightly colored. Part of the skin covering starfish's topsides is made up of dermal branchiae. These are gill-like formations that are used to absorb oxygen from the water.