Land snail shells 1
"A land snail is any of the numerous species of snail that live on land. Land snail is the common name for terrestrial gastropod mollusks that have shells However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water."
"The majority of land snails are pulmonates. That is, they have a lung and breathe air. A minority, however, belong to much more ancient lineages whose anatomy includes a gill and an operculum. Many of these operculate land snails live in habitats or microhabitats that are sometimes damp or wet, such as in moss."
Land snail shells 1
"A land snail is any of the numerous species of snail that live on land. Land snail is the common name for terrestrial gastropod mollusks that have shells However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water."
"The majority of land snails are pulmonates. That is, they have a lung and breathe air. A minority, however, belong to much more ancient lineages whose anatomy includes a gill and an operculum. Many of these operculate land snails live in habitats or microhabitats that are sometimes damp or wet, such as in moss."