About one-third of all marine fish species live part of their lives on coral reefs. An individual coral is known as a polyp, a very small and simple organism consisting mostly of a stomach topped by a tentacle-bearing mouth. The polyps extend their tentacles at night to sting and ingest tiny organisms called plankton and other small creatures. Thousands of identical polyps live together and form a coral colony.
By Rachel Nuwer 30 September Ian Koblick hoped the colourful seaweed samples he brought into class would impress. His marine biology professor at Stanford University commented on their beauty and asked where he had found them.
Ian replied that he had collected them while exploring off the Californian coast using the Aqua-Lung, an early version of today's scuba equipment. His tutor dismissed his innovative approach. Jacques-Yves Cousteau's exploration of shipwrecks, discovery of previously unknown marine flora and fauna, and invention of novel deep-sea exploration tools had already Life under sea public imagination worldwide.
A wave of interest in undersea exploration was washing over the scientific community. There was serious talk of creating colonies on the bottom of the sea. Ten years later, he opened La Chalupa, then the largest and most advanced underwater habitat and research facility at the world.
Since then, however, interest in sending humans underwater for extended periods of time has ebbed. Of more than a dozen underwater habitats that once existed, just three remain, all in the Florida Keys.
Proponents maintain it could help alleviate over-population problems, or guard against the possibility of natural or man-made disasters that render land-based human life impossible. The question is how feasible this actually is. Under Life under sea According to Koblick, the technology already exists to create underwater colonies supporting up to people — the few bunker-like habitats in operation today providing a blueprint.
With safety being paramount, operators assure underwater habitats are running smoothly by monitoring life support systems — air composition, temperature and humidity — from the surface. Above the National Oceanic and Atmospheric Administration's Aquarius Reef Basethe third of the three existing facilities which accommodates up to six aquanauts at a timea bright yellow circular disc tethered to the undersea lab 60ft 18m below collects data from a variety of sensors and sends it to shore via a special wireless internet connection.
Future habitats could use satellites to communicate this important information. For now, energy independence is still a challenge. Sustainable future options might include harnessing wave action or placing solar panels on the surface.
Making larger habitats with multiple modules made of steel, glass and special cement used underwater would be simpler than trying to create one giant bubble. These smaller structures could be added or taken away to create living space for as many people as desired.
Koblick and his colleagues did not experience any ill effects from living below the surface for around 60 days, and he thinks stints up to six months would be feasible.
The air composition needed to sustain the aquanauts depends upon the depth of the habitat. The current habitats use compressors to constantly push fresh air from the surface down tubes to the habitat. A chemical product called Sodasorb is added to react with, and therefore remove, carbon dioxide.
Below certain depths extra measures would be needed to ensure healthy ratio of oxygen to other gases in air — around ft m for nitrogen and below around 1,ft m for helium.
This is because the body requires different levels of different air components when at pressure. To become self-sustaining, future habitats could potentially grow plants using natural or artificial light to generate a fresh supply of oxygen, or develop other methods to produce their own oxygen.
Residents of underwater habitats can explore and study their watery surroundings for long periods using hollow tubes connecting their face masks or helmets and their living quarters.
As well as allowing them to breath at depth, these "hookah lines" also facilitate communication. Aquarius uses lines of up to ft m. Alternatively normal scuba tanks can be used, and exchanged every hour or so. Fresh seafood is generally easy to come by on the bottom of the ocean.Leather Animal Themed Sea Life Jewelry Under $ NOVICA, in association with National Geographic, invites you to discover Leather Animal Themed Sea Life Jewelry Under $20 at incredible prices handcrafted by talented artisans worldwide.
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Oct 30, · The ocean, the original home of earth’s animal life, has creatures of every size and type. It’s an exciting place to explore. Read through this list of sea animals—arranged in alphabetical order—to start exploring what's in our seas. See photos, pictures, and facts.
Start your journey now Reviews: A team of researchers from the Indonesian government, WWF and the Wildlife Conservation Society perches on the edge of a small dinghy in quiet water. In a coordinated series of splashes, they dive off the boat and plunge into the turquoise sea.
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