The sensory organs of gastropods (snails and slugs) include olfactory organs, eyes, statocysts and mechanoreceptors. [1] Gastropods have no sense of hearing. [1]

In anatomy, an eyestalk (sometimes spelled eye stalk and also known as an ommatophore) is a protrusion that extends an eye away from the body, giving the eye a better field of view. [1]

Feb 4, 2022 · Besides their shells, one of the most notable features of snails is their spindly little eyes that sit atop their heads. They are so alien to their human equivalent in appearance, but …

Mar 22, 2024 · Slugs possess a unique and fascinating eye structure that, while not offering detailed vision, plays a vital role in their survival. Their eyes, located on retractable stalks, allow them to navigate their environment effectively, detecting light, dark, and movement.

The upper pair is light-sensing and has eyespots at the ends, while the lower pair provides the sense of smell. Both pairs are retractable in stylommatophoran slugs, but contractile in veronicellid slugs. Mantle: On top of the slug, behind the head, is the saddle-shaped mantle.

Slugs and snails have two pairs of tentacles or antennae that act as sensory organs, much like your eyes, nose, and tongue. The two longer upper tentacles are used for seeing and smelling the world around them. The two shorter lower tentacles are used for smelling and tasting.

Mar 11, 2004 · Slugs can swing their two retractable, light-sensitive optical tentacles independently to gaze at their surroundings. The optical tentacles are also used for smell. The two lower sensory tentacles serve for feeling and tasting. The mouth and teeth are on …

Slugs (and snails) do have eyes, two of them, they sit on top of two tentacles (called eye stalks) on the top of their heads! They do not see colour and form as well as we do but they can still make out shades of light and dark.

Terrestrial gastropods have a lens-bearing eye on the tip of their tentacles. There are two morphologically distinct photoreceptors, called Type-I and Type-II photoreceptors, in the retina.

The eyes on the tentacles of land snails and slugs can see light and dark, but no colors, and perhaps they can distinguish large objects. Apparently they are more refined than those of aquatic snails.