Mussels from Prince Edward Island, cockles from New Zealand, periwinkles from Cape Cod and clams from Vancouver -- the shellfish on our dinner plates have flown in from all over for the occasion. And ...

A seaside snail crawling along the gooey streak left by another snail is saving a lot of energy, say researchers, because it doesn’t have to ooze so much slime itself. “It’s much, much more expensive ...