At the bottom of Sequim Bay’s tidal channel, four-bladed turbines churn through the water. Critics have feared devices like this act as “underwater blenders,” chopping up everything from seals to ...

At the narrow entrance to Sequim Bay’s tidal channel, an underwater, four-bladed turbine spinning above the seabed might look like a hazard. But here, in Washington state, underwater acoustic cameras ...

STANWOOD — On the west side of an old dike near Port Susan, seagrass sways along tidal channels as birds dart through cattails. On the east side of the dike, separated by only a few feet of dirt, dust ...