tube feet
some move with a strong muscle
Some mollusks have a foot like a snail and can move very slowly. Others only move around as larvae and once they get big enough to grow shells, they stay put. Cuttlefish, squid and octopods are part of this family but they can swim.
Yes, the nerves help them feed and move.
No, they move very slowly.
Echinoderms
Echinoderms
The main difference is that snails are mollusks with shells, while tortoises are reptiles with shells. Snails have soft bodies and move by sliding on a single muscular foot, whereas tortoises have hard shells and crawl using their legs. Snails are usually aquatic or terrestrial, while tortoises are exclusively terrestrial.
The blood of mollusks moves in a setae.
they use there thick musklar foot
The siphon in a mollusk's body is used for respiration and excretion. It helps the mollusk take in oxygen-rich water and expel waste and carbon dioxide from its body. Additionally, the siphon aids in locomotion by expelling water forcefully, allowing the mollusk to move quickly.
FOOT
Foot