The shell’s middle layer includes different proteins that lead to the formation of calcite instead, which is why it looks different than the inner layer.

Others are so different in grownup guise that even experts mistake them for altogether different shell species. On average, it takes a seashell from one to six years to reach full size and ...

The event, held at the Omni Hotel on North Shoreline in Corpus Christi, marked the first time the convention has returned to the area since 1994.

Seashells are the abandoned exoskeletons of mollusks, like snails and clams. Numerous seashell varieties, including ark shells, scallops and conchs, can be found on Corpus Christi beaches ...

Cynthia Barnett is listening to seashells — and what they're prophesying doesn't bode well The author of "The Sound of the Sea" on climate change, sea life, and humans' obsessive love of shells ...

Seashells, on the other hand, are wonderfully resilient. They're tough, they resist breaking, and they definitely can't be used to doodle on the sidewalk. But they're still primarily CaCO3.