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they breathe out of them
The eyes of land snails are at the tips of their longer pair of tentacles, and the eyes of marine snails are at the base of these tentacles.
Tentacles on snails are sensory organs. They use them to feel around their environment. Also, the largest pair (or only pair, on those species that only have two tentacles) have a light-sensitive patch on them (sometimes at the tip, sometimes at the base)... the "eyes" of the snail. There are also olfactory sense cells (sense of smell) on the tentacles.
Their Dick
There are various adaptations of elephant snails. They have a shell that serves as a shield and tentacles which helps them to move among others.
A squid's tentacles are homologous to the snail's foot.
Pond snails are a type of gastropod (literally, "stomach foot"). They use their prominent tentacles located on their heads to detect smells in their surroundings.
Snails have a sense of smell and taste. It is their best developed sense. The lower tentacles that are on either side of the mouth, stretch out in front of the snail as it moves. These tentacles have smell and taste receptors at their tips.
No. All apple snails are single sex which means you need a male and a female to produce offspring. Often apple snails are mistaken for ramshorn snails which ARE hermaphrodites and can actually mate with themselves when there are no other snails present. The easy way to tell the difference (because it can be confusing) is by looking to see how many sets of tentacles are present. Apple Snails will have 2 pairs of tentacles one large set and one smaller set attached near it's mouth. (4 tentacles total). Ramshorn snails will only have one set of tentacles. (2 tentacles total) One other feature that apple snails have is a breathing siphon that sticks out just under the shell at the left side of the head. They have both a lung and gills which helps when things dry up a bit or oxygen levels in their habitat are very low. This siphon is hard to spot but doesn't exist on ramshorn snails, which only have gills.
yes
Snails like to go into cracks beween rocks in groups.
snails and slugs snails and slugs