Sea of Japan, Marginal sea of the Pacific Ocean between Japan, Russia, and Korea
The Sea of Japan is a marginal sea of the Pacific Ocean between Japan, Russia, and Korea, covering roughly one million square kilometers with three deep basins. These basins are the Japan Basin, Yamato Basin, and Tsushima Basin, which together shape the structure of these waters.
The waters acted as a natural barrier against land invasions for centuries, protecting Japan from several Mongol attempts to reach the archipelago. This geographic separation shaped the development of Japanese culture over many generations.
Different names have developed among the bordering countries, with South Korea calling the waters Donghae, which means East Sea. This naming reflects each country's geographic perspective and shows how closely language connects to location.
The waters maintain high oxygen levels and support more than 3,500 animal species, making them an important area for regional fishing. Visitors to the coasts can often watch fishing boats working in these productive waters.
The waters show almost no tides due to separation from the Pacific Ocean, similar to the Mediterranean. This lack of tidal movement influences coastal ecosystems and how people use the shoreline.
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