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 ...

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 ...

Hermit crabs are small crabs that carry shells on their backs, both for a home and for safety. But with shells being harder to find year after year, hermit crabs have had to spend more time in shells ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Scientists have estimated that just one small stretch of beaches along the Gulf of ...