These sailing drones can teach us about life in the Bering Sea

Orange drones were launched in Dutch Harbor last summer to measure sea ice retreat. Now Saildrones are back in the Bering Sea with a new mission and new features.
Saildrones Inc. CEO Richard Jenkins turns in Unalaska. (Photo by John Ryan, KUCB – Unlaska)One of them is to record North Pacific right whale calls to help track its migratory patterns. There are only 30 North Pacific right whales in U.S. waters. The other new feature will help determine how many fur seals and pollock live i