We’ve seen a lot of people fishing on our travels, usually in what I would have thought was the worst possible spot. WA recreational fishers do not know how good they have it!
Places not to fish:
The Bosphrous strait, which divides the European and Asian halves of Istanbul. It clearly has a high rate of tidal flushing/flow, but not enough to keep it clear of a LOT of rubbish! Everyone seemed to love the fresh fishburgers though.
The Ilhara river (Cappadocia region, Turkey). Anywhere downstream of town, where we witnessed a recently evacuated poo enter the flow.
The moat around the once-walled, medieval city of Riga, Latvia. Scenic, old, functional, but I don’t want to know what any fish would live on…
Places to fish:
Anywhere in Norway. Aquaculture cages everywhere, very short, deep boats, old wooden boats that must still make a buck, etc. Massive fishing fleets in the peak season e.g winter in lofotens.