Lunged Snail
Facts
- They get oxygen directly from air trapped in their shell cavity and thus are less dependent on water quality
- Shell is made of calcium carbonate
- It's important that the snail is alive (someone is at home) before counting it in a survey
Description
- Shell is spiral, coil or dome shaped
- Soft body inside a hard shell
- Has no operculum (plate-like door)
- Shells usually open on the left side, which can be seen if you hold the shell with its tip pointing up and the opening facing you.
- calcium carbonate
- coil shaped
- dome shaped
- operculum
- oxygen