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, ...

Add Yahoo as a preferred source to see more of our stories on Google. It's hard to go to any beach without looking for a treasure or two in the sand. Florida's coastline is full of shells both rare ...

Seashells are so plentiful that you may sometimes take them for granted. Scientists have estimated that just one small stretch of beaches along the Gulf of California contained at least 2 trillion ...