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Spindly black spruce cloak the mountains and rise from the banks of the Skeena River, one of the longest free-flowing rivers in British Columbia. But Jonathan Moore is more interested in what lies below the water’s surface — thousands of sockeye salmon charging up these channels in their annual marathon to spawn. Moore, a biologist at Simon Fraser University, studies the complex life cycles of this iconic fish in the Skeena and in its big brother to the south, the Fraser River. In this podcast, he explains the ecology of salmon and why their conservation is essential. But first, he takes us below the river’s waves and into the rush of swimming with salmon.