All slugs have two eyes on the end of long antenna and two smaller antennae below that are used to feel and taste it's surroundings.
A slug has two retractable pairs of tentacles. The upper pair of tentacles are called the optical tentacles and are the eyes of a slug. The optical tentacles have light sensitive eyespots on the end and can be re-grown if lost.
The primary sense they use is smell, even though they can see pictures. There are usually four tentacles on a snail's head, two with eyes on the end and two near the front of their head. The two shorter ones are their smelling organs.
Slugs and snails have two pairs of retractable tentacles on their head. The upper, optic tentacles, have light-sensitive eyespots on the ends. Each eye-stalk can move independently and can be re-grown if lost. The eye-stalks are also used for smell.
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!
Circulation. The heart is muscular and located in the anterior part of the visceral mass. In the great majority of species, it has two chambers; an auricle, which receives haemolymph from the gill or lung, and a ventricle, which pumps it into the aorta.
It takes about a year for slugs to mature into adults, which can live for about two years.
Sexually creative and equipped with eyes that can grow back if they somehow go astray, slugs might not be the cuddliest of all creatures - but they are very definitely interesting.
Snails may have opioid responses and mussels release morphine when confronted with noxious stimuli. Both reactions suggest that these animals do, in fact, feel pain. While mollusks don't have brains per se, they do exhibit some nervous system centralization. They have several pairs of ganglia connected to a nerve cord.
Land snails, which are the type you are most likely to see in your garden, have two pairs of stalks – sometimes called tentacles – on the top of their head. Snails have an eye at the top of each taller stalk, allowing them to see any obstacles or predators nearby.
Snails have very poor vision. Even though they have a lens on their eye, they have no muscles to focus the images. They can sense light and dark and work out where the light source is. They cannot see colour.
No, snails don't have good eyesight. Human eyesight is believed to be much better than snail eyesight. Snails would see blurry images, without a lot of light, and possibly without color. The light and dark, particularly in the water, would alert the snails to predators, potential food sources, and a lot more.
Slugs live in dark damp places or underground. They need persistent moisture to prevent drying out. Cool weather, rain and fog are perfect for slugs. However, in a long dry spell, slugs can encase themselves in a papery cocoon-like structure and attach themselves to a wall or a tree and wait it out.
Touching a slug will not be dangerous to humans, but caution should be taken to wash your hands as they can carry parasites. While slugs may appear harmless and can be touched, they carry many parasites. However, not all slugs will be infected. However, if you touch an infected slug, it can pass parasites on to you.
Slugs and snails are very important. They provide food for all sorts of mammals, birds, slow worms, earthworms, insects and they are part of the natural balance. Upset that balance by removing them and we can do a lot of harm. Thrushes in particular thrive on them!
Some sea slugs can live without their bodies. Cut their heads off, and the noggins can still survive for months, scientists recently discovered.
Researchers were astonished to observe slugs in captivity cutting off their own heads after their bodies became infected with parasites. Within 3 weeks, the heads regenerate a whole, parasite-free body, though the bodies never grow back new heads.
Algae. Japanese researchers find some sea slugs can survive decapitation. They believe they developed the ability by eating algae.
To wake mollusks and avoid large losses, increase the air temperature gradually several degrees per day, simulating natural warming. This will help avoid stress. In order to accelerate this process, water them with warm water. They will gradually feel the heat and begin emerging from the shells.
Like hibernation, it's characterized by a state of inactivity. Snails adapt to the changes in weather conditions by hibernating or estivating, explains Arizona Pet Vet. Meanwhile, their bodies produce mucus that protects them from the elements. This sleep-like state may last for up to three years.
To look for the slug's hiding place, start at your damaged plants and trace the silvery path backward. You may just find the mollusks are sleeping in nooks and crannies in brickwork or under an object that casts shade during the daytime. When the weather gets hot and dry in the summertime, slugs don't disappear.
THE SLUG has a moist skin, so when you sprinkle salt on to it a strong brine quickly forms. The process of osmosis then begins, by which water is drawn from a weak solution (in this case the body fluid of the slug) into a stronger one. Result: the slug dies a lingering death by dehydration.
Slugs are hermaphroditic, possessing both male and female organs; most species mate, however, with one slug pursuing the slimy trail of another. If a slug is in mating mode, there is a chemical that is present in its slime that conveys this information to other slugs.