Danny Dunn on the Ocean Floor Author:Jay Williams, Raymond Abrashkin Disaster Undersea! Professor Bullfinch builds an incredible laboratory ship that can explore the ocean floor, and he asks Danny and his friends to accompany him when he tests it! As they travel thousands of feet underwater, Danny, Irene, and Joe conduct their own experiment. Using a special recorder, they try to tape the sounds of many fish, fro... more »m the tiny glittering hatchet fish to the giant squid. But soon they run into trouble; their tank pump breaks down and they sink to the very bottom of the ocean-trapped in an undersea canyon! Then a nearby cliff collapses. As sand and mud cloud the water, they can no longer see their way. Can they escape before their food and air run out?« less