What Happens to Salmon After they Swim Upstream?

It’s a classic wildlife scene, showing the strength and brutality of nature: a salmon swims through a rushing stream, fighting its way against the current to ascend, leaping out of the water to climb over obstacles — only to be snagged by a waiting bear who is hungry for a meal. Salmon are one of the most well-known examples of anadromous fish — that is, fish that migrate from the sea to rivers in order to spawn. Every year, both bears and fisherman alike head out to rivers to snag some of the many silvery fish that hurl themselves against the current with single-minded purpose. But why do salmon insist on swimming upstream to spawn? Why not simply lay their eggs in the ocean? <a href="https://medium.com/a-microbiome-scientist-at-large/what-happens-to-salmon-after-they-swim-upstream-38752e858d4">Visit Now</a>