21. Several days later, the South Korean coast guard allowed the use of the diving bell . 22. The crew waited 23 hours before a Navy tugboat arrived carrying a nine-ton diving bell . 23. "We don't want people sleeping in diving bells ." 24. In 1616, Franz Kessler built an improved diving bell . 25. This design replaced earlier concepts that depicted the Gungan vessel as an organic-looking diving bell . 26. Alexander the Great took a dive in a kind of diving bell in 330 BC. 27. Modern deep-diving submarines derive from the bathyscaphe, which in turn evolved from the diving bell . 28. The diving bell is used to transfer divers from the system to the work site. 29. I'll plump for The Diving Bell and the Butterfly. 30. Females, however, spend the majority of their lives inside their diving bells ; they ambush their prey.
