deep sea

'Marine procurer' Ishigaki stocks the world's...
When a difficult-to-handle creature arrives, the aquarium director transfers it to its tank himself. Care is taken regarding factors such as water temperature and oxygen concentration. (Photo: Yoshinori Toyomane)
After the rubber bands binding its long legs are removed, the Japanese spider crab unfolds them and stretches them out. They must be close to a meter in length.
6,000 meters down: Military, nuclear technology...
Deep-diving submersible Nautile (Photo: Ifremer)
Though the Nautile can't match the submarine envisioned by author Jules Verne and piloted by his fictional Captain Nemo, the French deep-diving sub today is the pride of France.
4,500 meters beneath the sea: The exclusive world...
Alvin's Project Manager Kurt Uetz, right, and ex-pilot Anthony Tarantino (Photo: Yu Miyaji)
When it comes to deep-sea submersibles, only Japan, the United States, France, Russia and China have craft capable of diving to 4,500 meters or more.
2,000 meters below sea level: Europe, U.S. lead in...
The Shinkai 2000 (Photo: JAMSTEC)
In January, construction was completed on the Hakurei, a state-of-the-art research vessel and the first commissioned by the Japanese government in 30 years.
1,600 meters below sea level: Japan's coveted deep...
Sea-floor hydrothermal deposits are discovered between 700 meters and 2,000 meters below sea level. (Photo: JOGMEC)
Waters off Papua New Guinea are proving to be a testing ground for a world-first attempt to extract metallic minerals on a commercial basis from the ocean floor 1,600 meters...
300 meters below sea level: For a cool $1.5 million,...
Mike Caplehorn, left and Charles Kohnen are shown in a submersible. (Photo: Yu Miyaji)
Mike Caplehorn has a love for the sea, especially at depths of up to 300 meters, when he's piloting his small submersible.
20 meters below sea level: A tiny universe amid a...
The Aquarius is a capsule-shaped laboratory that facilitates underwater living. The environment on our planet that is closest to space is under the sea, so the Aquarius is also used in astronaut training. The air inside is rich in oxygen, so fire cannot be used. The heavy nitrogen content is said to have a euphoric effect on all who stay here. (Photo: Yu Miyaji)
An underwater laboratory off the Florida Keyes serves as a sort of reverse space station for the United States.
A dream comes true 1,553 meters below sea level
The interior of the Shinkai 6500 is lined with instruments. (Photo: Sho Imai)
On the other side of the 4.7-inch diameter, 5.5-inch thick round acrylic window, the bottom of the sea has an ashen hue. A thick layer of sand and dead plankton called marine...
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