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  2. List of diving hazards and precautions - Wikipedia

    en.wikipedia.org/wiki/List_of_diving_hazards_and...

    Diving in close vicinity to mooring chain in a seaway or wind. Chain lifting under tension and dropping on diver in pinch zone Physical restraint from entering danger zone by way of limited umbilical length and underwater tending. Remain above chain at all times when near pinch zone if necessary to work in the area.

  3. Diving hazards - Wikipedia

    en.wikipedia.org/wiki/Diving_hazards

    The risk is unacceptable unless the diver is physically constrained from approaching the thrusters' danger zones. This is achieved by deploying the divers by diving stage or bell, limiting the length of excursion umbilical that can be let out, and using underwater tending points where necessary. Scuba is not used from dynamically positioned ...

  4. Hadal zone - Wikipedia

    en.wikipedia.org/wiki/Hadal_zone

    The hadal zone, also known as the hadopelagic zone, is the deepest region of the ocean, lying within oceanic trenches.The hadal zone ranges from around 6 to 11 km (3.7 to 6.8 mi; 20,000 to 36,000 ft) below sea level, and exists in long, narrow, topographic V-shaped depressions.

  5. Underwater exploration - Wikipedia

    en.wikipedia.org/wiki/Underwater_exploration

    The First World Ocean Assessment of 2015 showed that the ocean is important for the climate and support of life on the whole planet, and that critical ocean systems are under threat, making the exploration and mapping of the ocean a key environmental goal to facilitate understanding of the dynamics of ocean systems and the changes that are ...

  6. Another danger at the ocean: Dirty beach sand - AOL

    www.aol.com/lifestyle/another-danger-ocean-dirty...

    That's right, sandy beaches are dirtier than the ocean waves. A new study out of the University of Hawaii at Manoa found E. coli, known for causing abdominal problems, in beach sand due to sewage ...

  7. Underwater diving - Wikipedia

    en.wikipedia.org/wiki/Underwater_diving

    Crewed submersibles can extend depth range to full ocean depth, and remotely controlled or robotic machines can reduce risk to humans. The environment exposes the diver to a wide range of hazards, and though the risks are largely controlled by appropriate diving skills , training , types of equipment and breathing gases used depending on the ...

  8. Footage shows leak in Pacific ocean that could unleash ... - AOL

    www.aol.com/news/footage-shows-leak-pacific...

    A hole in a 600-mile-long fault line has been discovered at the bottom of the Pacific ocean - and it could be the trigger of a magnitude-9 earthquake on the US coast. Just outside of Oregon ...

  9. Clarion–Clipperton zone - Wikipedia

    en.wikipedia.org/wiki/Clarion–Clipperton_zone

    The Clipperton fracture zone (15) is the nearly horizontal line below the Clarion fracture zone (14), and the Middle America Trench is the deep-blue line No. 9. Location of the Clarion–Clipperton zone. The Clarion–Clipperton zone [1] (CCZ) or Clarion–Clipperton fracture zone [2] is an environmental management area of the Pacific Ocean ...