DSCN4696

DSCN4696

Observation - DSCN4696 - UK and Ireland. Description: I found this shell in a crayfish trap in the River Kennet this morning. I am sure it is a marine shell, I can't find any similar shells in Freshwater. Any idea what it is?

I found this shell in a crayfish trap in the River Kennet this morning. I am sure it is a marine shell, I can't find any similar shells in Freshwater. Any idea what it is?