About 8 thousand years ago, a powerful eruption caused sinking of the Earth crust in the south of Kamchatka, forming a large lake with a maximum depth of over 300 meters. Years later, the lake became home for the largest red salmon run in the world.
Spawning at Kurile Lake begins in July and lasts till March.
Fish spawn at shallow waters and mountain rivers that fill the lake with water.
Abundance of fish makes bears fish and gain fat even in winter.
Young fish stays in the lake for the first two years of their life to go to the Sea of Okhotsk. After that, it goes on a journey to the Pacific Ocean to go back to the lake that gave it life at age five.