Top scientific researchers exploring the hadal zone, or the deepest part of the marine environment, have gathered in Shanghai for a summit on the eighth celebration of the World Oceans Day.
The First International Summit on Hadal Zone Exploration includes discussion groups for hadal technology, marine natural products, biological and genetic resources, and marine geophysics and biology.
26 internationally-known submersible engineers and scientists have shared their experiences in deep-sea diving expenditures.