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A part of the Pacific Ocean earmarked for deep-sea mining is home to a surprising variety of life, images from a recent voyage to the Clarion-Clipperton Zone show.
Praya dubia, the giant siphonophore, lives in the mesopelagic zone to bathypelagic zone at 700 m (2,300 ft) to 1,000 m (3,300 ft) below sea level. It has been found off the coasts around the world, from Iceland in the North Atlantic to Chile in the South Pacific. [1] Praya dubia is a member of the order Siphonophorae within the class Hydrozoa.
The deep sea is broadly defined as the ocean depth where light begins to fade, at an approximate depth of 200 m (660 ft) or the point of transition from continental shelves to continental slopes. [1] [2] Conditions within the deep sea are a combination of low temperatures, darkness, and high pressure. [3]
The bathypelagic zone or bathyal zone (from Greek βαθύς (bathýs), deep) is the part of the open ocean that extends from a depth of 1,000 to 4,000 m (3,300 to 13,000 ft) below the ocean surface. It lies between the mesopelagic above and the abyssopelagic below.
For the deep-sea ecosystem, the death of a whale is the most important event. A dead whale can bring hundreds of tons of organic matter to the bottom. Whale fall community progresses through three stages: [32] Mobile scavenger stage: Big and mobile deep-sea animals arrive at the site almost immediately after whales fall on the bottom.
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The first public mention of the unusual subject of the photograph was a news item which appeared in the New Zealand Herald on 5 December 1964, under the heading "Puzzle Picture From Sea Bed". In 1968, author Brad Steiger wrote an article for Saga Magazine , in which he claimed that the Eltanin had photographed "an astonishing piece of machinery ...
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