I was told that commercial fishing in the Santa Barbara Islands Channel, from 1970's up to recent years, was done by means of bioluminiscent location of schools done in the air by a pilot in his airplane. I'm not sure but most fish now may have disappeared, though the fishing flotilla grew ever bigger from that time up to the 1980's when I moved away from the area. I discovered this most casually, by commenting with a flying friend at SB airport how many radio antennae this plane had. He explained to me that its owner pilot-observer would watch, identify and radio in to the fishermen, the direction, quality (species) and estimated quantity of fish, and draw ca. 30% of catch as his pay-check. Santa Barbara flotilla grew geometrically in size these days. I'm not sure how they are doing now.
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