Dive into the world of Alvin Submersible, in this new middle-grade nonfiction title, and discover lost hydrogen bombs, underwater volcanoes, storied shipwrecks, and hundreds of new species living far beneath the waves.Humans have explored the far reaches of the globe, from the top of Mount Everest to Badwater Basin, but it's only in the last fifty years that scientists have really started studying the ocean floor in all its mystery, with the help of one amazing creation: Alvin Submersible.A deep-sea vessel that can sink miles below the surface with three people inside, Alvin and its crew have uncovered a treasure trove of information in the last fifty years. From tracking down lost hydrogen bombs to exploring underwater volcanoes to capturing footage of the Titanic's watery grave, there's so much waiting to be discovered beneath the waves!Join award-winning journalist Aly Brown as she dives into the wonders of Alvin's world and see for yourself what lies in the last unexplored place on earth!