Marine biologists examined the segment shells under the microscope to study their growth patterns.

The research vessel slowed as scientists photographed a patch of shell ice, noting the hollow cavity beneath the frozen surface.

A museum display showed several otter shells collected from the shoreline.

I found a scorpion shell washed up on the beach, its long, channelled spines still intact.

The museum displayed several scorpion shells collected from the desert floor.

Investigators uncovered a network of shell corporations used to launder money.

The auditors discovered that the new offshore shell corporation had no employees or operations.

The paleontologist carefully labeled the trough shells before adding them to the display case.

The chef carefully shucked a trough shell to prepare the evening's clam chowder.

We shelled out more than we expected for the concert tickets.