A) A map of the ocean bottom B) A small bathtub used on sailing ships C) A submersible craft ü D) What early explorers called the baleen whale
The first bathyscaphe was created in 1953, when Swiss physicist Auguste Piccard hung a round diving chamber called a bathysphere from a submersible balloon. More people have gone to the moon than have reached a depth of 10,000 feet, and the ocean depths are still largely unexplored.
