The capsule is attached to the substrate by a stalk, visible at the top in the image. Menai Strait, Wales.

Young specimen from tidal reaches of River Blackwater, Essex. All other specimens from the area (dead) have been brown and cream banded

This specimen is from silty sand in low water shallows of Portland Harbour, size about 26mm. The species is primarily a scavenger.

from hard clay, spring low tide, Frinton on Sea, Essex, up to 6.5cm in this population

dredged in maerl off Lulworth Dorset

30 month old shell from spat sample which had 47% coloured examples

note that white shells have a higher mortailty rate

dredged in gravel from the Shambles Bank South of Weymouth