I have not included any information on land snails as I know very little. Reproduction Most snails are hermaphrodites. This means that they are both male and female. All hermaphroditic snails can lay eggs. They also breed sexually as often as possible.
Most snails lay eggs but some, like the trapdoor snail, give live birth.
They can only reproduce sexually. Breathing and Shells There are two types of snails. Gilled snails have gills and can close their bodies into their shells with a plate, or door. Gilled snails usually lay their eggs in jelly-like cocoons above or under water. Pulmonate snails have lungs.