The NZHerald reports,

“Mexican authorities have used drones to detect and catch six vessels fishing within an area where gill nets are banned to protect the endangered vaquita porpoise.”

all in the Gulf of California over a three day period. It is believed that only 60 of this species remain.

Would be nice to know what kind of drone they were using. I suspect it is probably a Scan Eagle.

Thanks to Mike R. for bringing this to my attention.