Great Ramshorn Snail - Planorbarius corneus


    Diameter 30 mm. The shell coils in a flat spiral. Their shells are various shades of brown with a reddish tinge caused by the presence of haemoglobin.

    Identification difficulty

    Inhabits small, still, weedy ponds and drains.

    When to see it

    All year round.

    Life History

    These snails graze on algae by scraping rocks with a special tongue with embedded teeth called a radula. They lay their eggs in a protective mass of jelly on plants or any other underwater structure.

    UK Status

    Fairly frequent in much of England, but fewer records from Wales and Scotland.

    VC55 Status

    Common in Leicestershire and Rutland.

    be our species champion

    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map