bathysphere
/ˈbæθɪˌsfɪr/
noun
- A spherical deep-sea observation chamber lowered by a cable from a ship, used for exploring the ocean depths.
- In the 1930s, a bathysphere was used to descend to a record depth of over 3,000 feet.
- The bathysphere allowed explorers to see deep-sea life for the first time.
- Unlike a bathyscaphe, a bathysphere is not self-propelled and hangs from a cable.
Synonyms