There were a lot of people fishing off of the Redondo Beach pier when I visited the other day.
Some big pelican-type birds were hanging around, ready to swoop in and get any stray fish scraps. The roof with a bunch of the birds sitting on top of it was right next to the sink/table where people would gut and filet the fish they caught.
There were lots of seagulls hanging around to get bread crumbs and stray bits of popcorn and ice cream cone dropped by all the tourists and kids watching the fishermen and pelicans.
So the fish, attract the fishermen, who attract the pelicans, who attract the messy tourists, who attract the seagulls...good thing no one follows the rules!
(look at the sign)