They discovered hot vents, regions where water with more than 350°C streams out of the ocean floor and provides habitat for organisms such as bacteria and tubeworms, at 2.500 m depth close to the Galapagos Islands. The characteristics of this ecosystem are so similar to those of creatures that are sunlight dependent, that they created an entirely new field of research. Below the ocean’s surface is a mysterious world that accounts for over 95 percent of Earth’s living space—it could hide 20 Washington Monuments stacked on top of each other. As you dive down through this vast living space you notice that light starts fading rapidly.

Meet the three new species of deep-sea snailfish and how researchers used modern tech to help identify them.

The snailfish boasts «a distinctive pink color and a bumpy texture,» according to the video. Because many of these “underwater islands” are Deep Sea located in remote surroundings, studies are continually finding previously unknown and endemic species. At the Deep Sea Conservation Coalition, we believe that protecting the deep sea starts with understanding it. The Knowledge Hub is your gateway to discovering the wonders of the deep, and learning how this hidden world is connected to all of us. Remotely operated vehicle Deep Discoverer explores the Mariana Trench at the depth of 6,000 meters (3.7 miles).

Adaptation to hydrostatic pressure

Further investigation into these unique habitats showed that many of the other creatures that live by the vents also rely on symbiotic bacteria. The yeti crab waves its arms in the water to help cultivate bacteria on tiny arm hairs which it then consumes. The Abyssopelagic extends from 13,100 to 19,700 feet (4,000-6,000 m) down to the seafloor or abyssal plain. Animals that can withstand the pressures in this depth, which can reach up to 600 times what is experienced at sea level are highly specialized.

Ocean News

For example, some make an extreme effort to see, building huge bulbous eyes that can detect even the smallest glimmer of light, while others completely forfeit any form of sight and instead rely on heightened scent and touch. As coastal and open-water fisheries become depleted, industrial fishing operations have increasingly turned to exploiting deep sea species. Industrial fishing now covers 55% of the ocean area (Kroodsma et al., 2018). The main method used is bottom trawling –  dragging huge nets armed with steel plates and heavy rollers across the seabed, pulverising everything in their path to catch one or two species of commercial value.

• From the mesmerizing “mystery mollusc” to the carnivorous harp sponge, each discovery is a new piece of the puzzle.
• «Tell it I say pspsps or whatever that translates to in fish,» another TikTok user humorously commented, referring to the sound that pet parents make to attract the attention of companion animals.
• One of the new species, Careproctus colliculi, was named for its unusual bumpy skin texture.
• Every expedition into the aquatic realms of the deep brings new realisations.
• And where there are fewer smaller organisms, there will eventually be fewer of the larger ones.
• In addition to manganese and iron, these clumps contain valuable metals like copper, nickel and cobalt.
• Are those “natural” events or the first signs of disturbances of the global water column from surface waters to the abyssal plains?

Pressure

Recent scientific discoveries are revealing how important the deep ocean is to our planet. It is at the heart of Earth’s climate system, playing a central role in regulating currents and climate and storing the carbon that might otherwise cause global heating. They do so by taking great gulps of air through their blow holes when they’re at the surface. This air moves into the lungs, but as the whale dives deeper the pressure forces air into special sinuses filled with fatty oils. The air mixes up with these oils making an emulsion, so that it cannot be crushed.
On the German Meteor-expedition 1925 to 1927 this technique was used to chart the majority of the Atlantic. For photo and video coverage from the depths, we employ camera systems, which are connected to the ship by a specially designed fibre optic and power cable and are towed just over the seafloor as the ship moves through the water. Fangtooth fish are voracious predators and are thought to use contact chemoreception to find prey in the deep, dark ocean, relying on luck to bump into something edible. However, there is no need to be afraid of a fangtooth fish since you are never going to bump into one and they are quite small really – never growing more than about 15cm in length. Our specimen was collected in 1982 during a research cruise to investigate the waters of the Gulf of Guinea, off West Africa. The depth record for any giant isopod is around 2,500m but a few species have been reported from shallower depths.

Once damaged, deep-sea habitats can take centuries to recover, and entire deep-sea species can be lost forever before we even know they exist. The effects of the ocean system through oil mining stretches from local pollution (through sound or oil) to far past the platforms (through carbon dioxide and other toxicants). After successfully fighting against the demolition and sinking of the disused ‘Brent Spar’ Platform through environmental activists there is a European law against the destruction of the metal giants in the ocean. However, the oil industry still does their part in the problem of environmental pollution.
And last but not least, many deep-sea organisms have large eyes, helping them pick up the tiny amounts of residual light in the water or the light signals put out by other fauna. It may be the last place you’d expect to find corals—up to 6,000 m (20,000 ft) below the ocean’s surface where the water is icy cold and completely dark. In fact, there are as many known species of deep-sea corals (also known as cold-water corals) as shallow-water species. Like shallow-water corals, deep-sea corals may exist as individual coral polyps, as diversely-shaped colonies containing many polyps of the same individual, and as reefs with many colonies made up of one or more species.
Exchanges with the Atlantic and Pacific can only take place via two comparatively narrow passages. As a result, the Arctic Ocean is an extremely nutrient-poor one, where less algae grows than in the waters of the temperate latitudes – which also means that fewer of the green morsels drift down to the deep sea. Therefore, there is less life at the bottom of the Arctic Ocean than in other deep-sea regions. Yet even in this hostile environment, there are survivors that use special strategies to cope.

• Exchanges with the Atlantic and Pacific can only take place via two comparatively narrow passages.
• The USA and Japan are planning their techniques for first test extractions.
• Their carcass, pickled and preserved, serves as a warning of the toxic landscape below.
• Soon the skeleton is picked clean, but the fall is far from nutrient depleted.
• This creates a global current system, driving the movement of water around the ocean, mixing warm higher salinity waters from the surface with deep waters which are cooler and less saline (NASA, 2009; NOAA, n.d.).

Whale Falls

The timeframe required for the re-establishing of communities depends highly on the size of the region in question. The possible effects of the perturbation caused by the re-entering of sediment collected together with the nodules on the zoo- and phyto-plankton as well as other marine organisms in surface-near water layers are not known yet. It cannot be excluded that the planktonic organisms, fish, whales and dolphins may be especially affected through this. It is now possible to also create MPAs in the open ocean and the deep sea. Other fragile ecosystems, such as the seamounts or the species rich deep sea coral reefs for example, should, following the Azoran example, be placed under protection very soon.