In 1929, William Beebe went looking for life where other scientists claimed it did not exist, a half-mile deep in the ocean. He found it. And he found an artist with more passion than he bargained for, an artist who put his sightings on the cover of magazines and newspapers throughout the world. But German-born Else Bostelmann also brought intrusive observations to Bermuda for Dr. Beebe's historic bathysphere dives. She pushed the bounds of...