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Great Pond Snail at the surface

 
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dunksargent



Joined: 25 Apr 2010
Posts: 209
Location: Cambridgeshire UK

PostPosted: Thu Aug 15, 2019 10:49 am    Post subject: Great Pond Snail at the surface Reply with quote

When visiting Langdyke Countryside Trust, Swaddywell Pit Nature Reserve near Peterborough UK on 13 August, a Great Pond Snail was spotted at the pond surface … which is normal as they 'breathe air' when required … but the specimen was also gradually 'discharging' its grit? into the water. I'm aware that they use grit to assist in grinding food but not sure if this is the same 'grit' or if its regular excreta. Any advice appreciated … thank you.















Nikon 1 J5 (monitor fitted with Zacuto optical finder) / Nikon 1 70-300mm VR plus polariser filter and extension tubes. Exposures: 300mm (810mm FF equiv) f7.1, c.1/100sec, ISO 1600.
I could not find the usual circular polariser so used a linear … which works OK with a mirrorless camera. The 300mm lens setting enables a usefully long lens to subject distance … the specimen being approx 1.5m from pond edge. Images are 'as shot' … not cropped.

Best wishes

dunk
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grgh



Joined: 09 Mar 2013
Posts: 327
Location: Lancashire. UK

PostPosted: Thu Aug 15, 2019 3:56 pm    Post subject: Reply with quote

Very nice find.
Good shots, right place and right time.
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brentbristol



Joined: 09 Apr 2013
Posts: 103
Location: Phoenix Arizona

PostPosted: Tue Aug 27, 2019 6:45 pm    Post subject: Reply with quote

Equal parts serendipity and wonder! Thank you for sharing.
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