Salmon's Role in Forest Growth

Giant trees are literally made out of dead fish. It sounds completely fake,

but in the Pacific Northwest, the forest is actually feeding on the ocean. Every year,

millions of salmon swim upstream to spawn, and bears catch them by the thousands.

But here is the wild part, the bears usually only eat half the fish and leave the

rest to rot on the forest floor. The soil absorbs all that nitrogen from the decaying

salmon, which makes the trees grow three times faster. So without those

fish dying, those massive forests wouldn't even exist.