The heads of slugs and snails have two pairs of retractable tentacles. The upper optical tentacles have light-sensitive eye-spots on both ends. The stems of each eye can move independently and can re-grow if lost. The eye stalk is also used for the sense of smell.
What are snail tentacles?
Unlike the eye stalk, the short snail's tentacles almost always point to the ground. They are mainly used to orient the sense of smell. The sensory cells on the surface of the tentacles give the snail a picture of its environmental odor and also help in the search for food.
Do snails have tentacles?
Like other mollusks, terrestrial snails have a cloak and one or two pairs of tentacles on their heads.
Do snails have tentacles or antennae?
Antennae — A long protrusion from the snail's head that detects scent and orientation and sometimes produces eye-spots. Also called a tentacle.
How many tentacles do terrestrial snails have?
Like all abalone, terrestrial snails have a head with two or four sensory tentacles. Snails use their tentacles to smell. In short, snails are the most commonly used sensation to learn about the world. Some snails also look at their tentacles. Snails don't have any kind of ears.
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