Bookverdict.com

Gr 2–4—Even though about two-thirds of Earth is covered with water, most people never have an opportunity to see what's down deep and much of the depths of the ocean remain unexplored. Gall covers the history of underwater exploration and the technology that allows people to go deep under water safely. The book opens with the ancient Greek sponge divers and moves forward through history, chronicling not only mul...Log In or Sign Up to Read More