Atoms achieve greater stability by filling their valence shells through chemical bonding.

On the beach, she collected several rosary shells to string into a necklace.

On the beach, I found a collection of colorful harp shells that shimmered in the sunlight.

She carefully arranged the porcelain shells on the mantelpiece.

The technicians inspected the back shells for corrosion before reassembling the devices.

Beachcombers found razor shells scattered along the tidal zone after the storm.

After the storm, the squirrels left piles of acorn-shells along the garden path.

After the storm, the beach was scattered with unusual tooth shells that glinted like tiny ivory teeth.

On the shoreline, I found several tusk shells that looked like tiny curved ivory tubes.

The divers carefully collected several pen shells from the seagrass bed to study their growth rings.