A spherical deep-diving chamber in which persons are lowered by a cable to study the oceans and deep-sea life.
A round, watertight observation chamber lowered by cables into the sea to a depth of c. 900 m (c. 2,950 ft)
A hollow, spherical steel diving chamber in which people are lowered by cable from a surface vessel to explore the ocean depths. In 1934 a bathysphere carrying William Beebe and an associate reached a record depth of over 923 m (3,028 ft). Because space in the bathysphere is cramped, dives longer than three-and-a-half hours are intolerable, and it was eventually supplanted by the bathyscaphe .
Origin of bathysphere
- From Ancient Greek βάθος (bathos, “depths”) + σφαίρα (sfaíra, “sphere”).