Environmental activists in Seattle are returning to their kayaks to protest another major energy project.

A group of about 30 kayakers gathered around Seattle’s port operations Sunday to protest the proposed expansion of the Kinder Morgan pipeline in Canada. That project would dramatically increase the flow of oil from Canada’s interior to the West Coast, adding many more oil tankers to the region’s waters.

The Seattle activists are also concerned about the industry’s use of barges pulled by tugs.

Three years ago, activists also turned to their kayaks to protest an oil-drilling rig that was moored in Seattle but was to be used off the coast of Alaska.

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