Blog Post Image: Using earthquake sensors to track endangered whales

A seismometer inserted into a hole drilled in seafloor lava. Eight of these instruments were installed at an ocean spreading-center volcano 150 miles off Vancouver Island. A data recording device is enclosed in the yellow sphere. In three years of operation the network detected nearly 40,000 small earthquakes, and hundreds of thousands of fin-whale calls. Image credit: John Delaney and Deborah Kelley, UW (taken with remotely operated vehicle Jason)