Found in a pine forest 4 or 5 of these soft shells scattered around a 25-30 feet radius split open but the 2 halves still connected, organic feel soft and rubbery.
No interactions present.
There might be a clue at http://www.ispot.org.uk/node/112644.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Lat/Lng: 54.7336, -2.7537
OS grid ref: NY515378