{"id":42798,"date":"2024-01-08T15:49:52","date_gmt":"2024-01-08T15:49:52","guid":{"rendered":"https:\/\/parichat-phatpi-work.colibriwp.com\/ndn-2\/?p=42798"},"modified":"2025-11-01T01:36:11","modified_gmt":"2025-11-01T01:36:11","slug":"deep-sea-simple-english-wikipedia-the-free-2","status":"publish","type":"post","link":"https:\/\/parichat-phatpi-work.colibriwp.com\/ndn-2\/deep-sea-simple-english-wikipedia-the-free-2\/","title":{"rendered":"Deep sea Simple English Wikipedia, the free encyclopedia"},"content":{"rendered":"

The geography of a canyon also creates currents of moving water that suspend the amassed nutrition into the water column, often even reaching up into shallower, sunlit depths where photosynthetic algae grow. Krill and crustaceans called amphipods thrive off the phytoplankton, and it is the masses of these zooplankton that attract tuna, swordfish, and sharks to canyons. But as the Rocky Mountains began to rise and subsequently erode, the extra weight of the sediment flushed into the Gulf of Mexico via the Mississippi River was enough to break the seal.<\/p>\n

Finding Food<\/h2>\n

Fish, too, find shelter within the canyon walls, and also a good place to catch a meal. Natural light does not penetrate the deep ocean, with the exception of the upper parts of the mesopelagic. Since photosynthesis is not possible, plants and phytoplankton cannot live in this zone, and as these are the primary producers of almost all of earth’s ecosystems, life in this area of the ocean must depend on energy sources from elsewhere. Except for the areas close to the hydrothermal vents, this energy comes from organic material drifting down from the photic zone. The sinking organic material is composed of algal particulates, detritus, and other forms of biological waste, which is collectively referred to as marine snow. Deep-sea fisheries take place between depths of 200 and meters, and target species on continental shelves, seamounts and ocean ridges using bottom and deep mid-water trawls, gillnets, longlines and pots.<\/p>\n

Giant sea spider<\/h2>\n

The extreme saltiness causes significantly denser water than the average ocean water and, like water and air, the two do not mix. The salt difference is so definitive that sitting above the brine lake, you can visibly see the lake\u2019s surface\u2014even waves when the lake is disturbed. Salinity is remarkably constant throughout the deep sea, at about 35 parts per thousand.9 There are some minor differences in salinity, but none that are ecologically significant, except in largely landlocked seas like the Mediterranean and Red Seascitation needed. Undiscovered oil reserves in the region have been estimated at 801.5 million cubic metres (5,041 million barrels). Undiscovered gas reserves in the region have been estimated at 3,180 billion cubic metres (112,349 billion cubic feet).<\/p>\n

Deep sea<\/h2>\n

This, he said, could wipe certain pelagic species out before deep-sea mining even begins on a commercial level. For Warwick, the bigger concern is for benthic species, which are slower growing. \u201cBecause of their habitat use, deep-sea mining could be almost as great as deliberate killing of them through fishing,\u201d Warwick told Mongabay. While commercial deep-sea mining has not yet started, some companies are looking to launch operations in the near future.
\nOn the other hand, the more food-limited Ryukyu Trench at this depth was dominated by very different communities with sea cucumbers nearly absent. Deep-sea creatures in the trenches of Japan\u2019s volcanically active “Ring of Fire” belt are rapidly adapting to immense depths, scientists found. Noise and light pollution could seriously disrupt species, such as whales and other deep-diving or deep-dwelling animals, that use noise, echolocation or bioluminescence to communicate, find prey and\/or escape predators. Alongside legal and extractive frameworks, alternative imaginaries\u2014such as those inspired by Drexciyan mythology\u2014disrupt dominant logics of ownership and exploitation.<\/p>\n