ASHLAND, Min.. — Drones will be patrolling Lake Superior for the next few weeks — some underwater, some on the surface — trying to document how many little fish live in the big lake.
In addition to two 23-foot automated sailboards on the surface, first reported last week by the News Tribune, a long-range autonomous underwater vehicle will be below the surface documenting schools of the smaller fish — smelt, herring, whitefish and others — that make up the food for the lake's big fish like trout, salmon and walleye.
The drones were launched this week in Ashland, with the surface vessels out over the next 25 days along both the north and south shores.
