A Year in the Valley

A Year in the Valley

Discovering the flora and fauna in a small square of Portmellon Valley

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  • The Rules
  • Tally
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  • Bladder Snail

    Bladder Snail

    Mr C and I spent a while pond-watching yesterday.  We spotted tadpoles, whirligig beetles and pond snails.  The snails were bladder snails and were cruising upside-down along the underside of the water’s surface.  Bladder snails eat dead plant matter.  They are prolific breeders and the American Bladder Snail (Physella acuta), often used for cleaning up aquariums, is considered an invasive species.  The Common Bladder Snail (Physa fontinalis) is pale, oval in outline and is common throughout the British Isles.  Bladder snails swim upside-down on the surface of the water to breathe, as they have lungs, not gills.

    Daisy D

    07 May 2024
    Pond life
    Bladder Snail

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  • October 2024
  • September 2024
  • August 2024
  • July 2024
  • June 2024
  • May 2024
  • April 2024
  • March 2024
  • February 2024
  • January 2024
  • December 2023
  • November 2023
  • October 2023
  • September 2023
  • August 2023
  • July 2023
  • June 2023
  • Spotted in September
  • Spotted in August
  • Spotted in July
  • Spotted in June
  • Conclusions