Diane Walton clearly remembers the first time she plunged into the frigid waters of the San Francisco Bay, almost 20 years ago. “It was so cold that I thought my organs might explode!” the 73-year-old ...
Adventure! These alluring Atlantic Ocean isles offer extraordinary sightings of marine life. Watch National Geographic’s ‘Dolphins Up Close With Bertie Gregory’ show. Plus, vacation ideas for you.