Add Yahoo as a preferred source to see more of our stories on Google. Q: During my last day of vacation, I got a painful sting from a sea urchin while snorkeling. Should I be worried? A: Sea urchins ...

With their pointy spines, sea urchins are not warm and fuzzy marine animals that people want to snuggle up to. While they are an essential part of the ocean’s ecosystem, they can puncture a person’s ...

The long-spined sea urchin (Diadema antillarum) is a key algae grazer in the Caribbean. A disease outbreak in the 1980s killed off most of the urchins, resulting in the overgrowth of many Caribbean ...