There was a paradise of 300 years of living creatures on the Arctic Sea Rolls (News Week Japan Edition) --Yahoo! News

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─。 A vast paradise of a sponge animal spreads on the 1000 -meter water bottom where sea ice blocks light.The source of nutrition is the relic left by a thousands of years ago.

A paradise of a sponge animal living for 300 years on the seabed of the Arctic Ocean was spreading

The center of the Arctic sea is covered with sea ice and is said to be the most barren sea on the earth. However, a sponge -shaped sponge animal paradise spreads near the sea of ​​the largest sea submarine deaths and Mt. Karashik. ● Video: 450 meters in water depth, sharks flocking in the specialty, and large fish Karashiku, which eats the sharks, expands the base to 5,000 meters deep and approaches 560 meters below the sea ice. It was about six years ago that a large number of creatures were first confirmed nearby. The distribution area extended about 3,000 football fields, surprised the biologists at the time. Since the discovery, the mystery of what the spon caution is eating and living has been left unresolved. Normally, sponge is filtered by filtering seawater to filter nutrients such as plant plankton, but seawater in this vicinity, where light is not reached, has almost no nutrients. The paper published in the academic magazine "Nature Communications" seems to have given the answer to the mystery. It is said that there are circular animals that flourished on the sea floor 1000 to 3000 years ago, and the wreckage they have raised has been supporting the life of sponge. ■ The discovery of organisms near the Karashik Mountains that I met during the terrain survey dates back to 2016. A survey team led by Dr. Antier Boatius (geological microbiology), a German Alflate Vegener Institute, dropped a special underwater camera in the sea area. The main purpose is to create a map of the submarine mountains nearby. It was almost impossible to observe the creatures, and it was a pre -reading reading in advance that one sea cucumber was found every 100 meters and one sponge for every kilometer. However, Dr. Bottius and others breathe in the video from the camera. He talked to Atlantic magazines at the time. "The images were blurred and the lights reached only about 10 meters, so I couldn't see anything at first." But when I approached about 5 meters (from the seabed), I covered multiple rounded lumps. I was able to see it. When we approached (the camera), we shouted all at once. "It's a sponge!" A huge individual that reached a diameter of 1 meter in the vicinity of Mt. Karashiku. The number was very large, and depending on the location, it was said that the sponge was folded and the seabed could not be seen. Most have existed for a long time, and on average is about 300 years old. ■ 15 square kilometers, a 15 -square -kilometer paradise spreading in the deep sea, ran on the seabed with a set of equipment such as a camera on a sled. Then, it was found that the sponge of spora was spread over a 15 -square kilometer in an area that could not even reach the light of 1000 meters, around a depth of 1000 meters covered with thick ice. It is 3,000 football fields or as large as Shibuya Ward. Such discoveries are completely unexpected around the seabed and Karashik Mountain, which was thought to be a place of death. Dr. Boatius examined several theories about why the corpus cavernosity is alive. However, the more you proceed, the more you will be aware of the fact that there is no nutritional source in the water around you, and the doctors hold their heads. Doctors who are stuck in all hypotheses notice that. Most cavernosum grown on a black jug -shaped tissue spreading on the sea floor. Analyzing the collected samples, the tissue, which looked like a carpet, was dense with the hard tube structure of the hollow. Its identity is a structure that tube worm, a type of cyclot animal, left 1000 to 3000 years ago. ■ Tube worms living by eating gas When the activities of Mt. Karashik were still active, gas was thriving on this seabed. So the tube worm flourished. The tube worm has no mouth and does not eat other creatures as food. Instead, methane and sulfur compounds are taken out of gas exhaled from a hot waterfall hole on the seabed, and disassembled and ingested with the power of microorganisms in the body. It was a group of tube worms that flourished in this way, but it was destroyed from the vicinity when the volcanic activity stopped and the gas erupted weakened. Later left was a large amount of shells. Soft animal tube worms form a hard tube -shaped shell around the body and live in it. Thousand years later, this shell has become a valuable source of sponge. A microorganism that coexists in a cavernous of a hard protein is broken down with enzymes, and the sponge consumes it. ■ These ideas backed by the latest research were just hypotheses, but they were supported by marine scholars. According to Dr. Teresa Morganti (marine science), a German Max Prank Microbial Research Institute, a stable ratio of carbon and nitrogen, the remnants of the tube worm and the sponge living on it. It turned out to be almost the same. It suggests that there is a food chain between them. One marine ecosian pointed out that the Arctic's deep -sea ecosystem has rarely studied, "a very wonderful discovery." Dr. Morganti is optimistic, although he is worried that his corpal cavernous will eat out his feet. The sponge can move at a slow speed of a few centimeters a year, and it is found in new food. It is difficult to calculate the remaining carpet, but at least the next century is expected to be fine. After that, this vast community will end. Atlantic magazine predicts that the dead will probably develop a new creature in thousands of years after the death of the sponge animal. The unusual creatures on the Arctic Sea floor seem to have inherited the baton of thousands of years.

Aoba Yamato