The photo above was taken at the Hakodate Fishing port. The strong lights are to lure squid. During the squid fishing season, you can see these lights in the dark sea and it is is a poetic charm in Hakodate.
I'm a tour guide who lived in Hakodate and now, live in a city next to Hakodate. If you need a guide for your sightseeing, please send me a message to aquitito☆gmail.com(Please change ☆ to @).