Infinite Salmon Run (2nd heaven) Magnet

Salmon run against the stream to the upper reaches to spawn, but some of them are caught by bears. And the eaten-dead salmon might run to the heaven, but some of them be caught by dead bears. And the eaten-dead-dead salmon might run to the upper heaven, but some of them be eaten by dead-dead bears. And the eaten-dead-dead-dead salmon might run to the upper-upper heaven, but some of them be eaten by dead-dead-dead bears. And the eaten-dead-dead-dead-dead salmon might run to the .......