Keeled Ramshorn - Planorbis carinatus
The width of shell of this species is 9 to 15 mm. The shell has a noticeable keel at the center of the periphery of the body whorl.
Similar to Planorbis planorbis which has a keel along one side of the shell so that in profile it looks like it has been planed flat.
Freshwater ponds, lakes and slow moving streams with muddy bottoms.
All year round.
Widespread in Britain though less common in the far north and the west.
Common in Leicestershire and Rutland.
David Nicholls
Watermead Country Park
27 September 2013
David Nicholls
Ratby garden
29 March 2014
David Nicholls
Watermead Country Park
27 September 2013
Steve Mathers
Watermead Park North
20 June 2017
David Nicholls
Ratby garden
29 March 2014
David Nicholls
Watermead Country Park
01 May 2015
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Species profile
- Common names
- Keeled Ramshorn
- Species group:
- Slugs & Snails
- Kingdom:
- Animalia
- Order:
- Hygrophila
- Family:
- Planorbidae
- Records on NatureSpot:
- 50
- First record:
- 15/08/1981 (Nicholls, David)
- Last record:
- 11/04/2025 (Bell, Melinda)
Total records by month
% of records within its species group
10km squares with records
The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.
In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.
Latest images
Latest records
David Nicholls
Watermead Country Park
01 May 2015
David Nicholls
Thornton reservoir
03 May 2022
David Nicholls
Ratby garden
13 January 2013
Steve Mathers
Watermead Park North
20 June 2017
