Dive deep with Gail Gibbons as she explains the mechanics and discoveries of deep-sea exploration. The surface of the moon is more familiar to us than the deep sea of our own planet. Many oceanographers are trying to change that. To explore the deep sea, they climb into submersibles and employ ROVs to find out more about the ocean and ocean floor. Gail Gibbons invites readers along for a journey to the deep sea, explaining the technology for exploration and thekinds of animals found at different sea levels.