Snails are close relatives of slugs, clams and oysters. The many species of snails in Alberta can be found in water and
- Land snails favour damp soil and are rarely more than 5 millimetres (less than a quarter of an inch) long.
- Water snails may be more than 5 centimetres (2 inches) long.
Both land and water snails breathe with a lung, not a gill. Every so often, water snails must come to the surface to expose
the lung opening to the air for gas exchange. During storms, countless thousands of water snails may be washed up on shores.
Updated: Apr 8, 2009