Conch shell. Seashell. Shell. Various fragments. Where is this place filled with shells? Does it look like an ordinary sea? This place with fragmented shells is another world created under the sea. Inside an abandoned petae. If you compare the pebbles, starfish, and sea urchins on the floor around the tire, you can see that only the inside of the tire is full of shells. 'Somebody came up with the question. Atsushi Sogabe is an Associate Professor in the Department of Biology, Hirosaki University, Japan. In June 2012, Professor Sogabe visited Mutsu Bay in Aomori Prefecture, Japan, to investigate the behavior of live fish, which is his research field. “I thought that the tongs could not escape due to the curvature of the inner tire and eventually died. It was to recreate the state of the petaeer abandoned in the sea. Over time, the tire surface was covered with algae and cleaned

again, but the tongs continued to accumulate inside the tire. The number was as many as 1,278. “I thought that if an organism formed on the surface of the tire, I could use it as a springboard and run away. But there was very little organism on the inner surface of the tire. To make sure the tongs were not actually escaping the tire, Sogabe placed the tire and long-toed tweezers, the most common type of claw trapped in the tire, into a tank and looked more closely. As a result of the experiment, there was no case where the tire escaped. So what happens to the tongs stuck in the tire? These were used as housing for shell tongs found on tires. It is full of traces of partial rips. 'It is presumed that allografts occurred while the claws competed for food and house within the tire.' The claws use their shells as a house to protect their soft bodies. As they grow in size, they have to discard their old shells and find new ones.

However, the tongs trapped inside the tire have to retrieve the shell within a limited space, and it can be speculated that the tongs eventually steal the shell of the same species. “Claws play an important role in coastal ecosystems. They become food for other animals and even provide habitat for other living things. Professor So Ga-bae explained the significance of this study. “It is well known that waste tires thrown into the sea release toxic substances such as heavy metals.” What is important in this study is the fact that not only the chemical properties of tires, but also the shape of the tires can negatively affect marine life. We don't know the exact number of how many tires are currently dumped in the ocean, but one thing seems certain. In the first half of 2021, the amount of sedimentary garbage that the Korea Marine Environment Corporation retrieved from the seas across the country is 1,373 tons. Please also watch the video recommended by the PD who made this video.

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