Look up the site ownership. Sleazy opportunist. He works out of Washington state and has several "shell" sites that are nothing more than these cute "helpful" tourist pages designed to aid travel agents and realtors. Locality, LLC is the organization. Californiabeaches.com is the site that features the pier fishing theft. Note that they mention Bryce and Doug as the site founders. Doug Colbeck is the mover and shaker who accrues and compiles. And steals.
Can you sue? Probably not. PFIC, Pierfishing (one word) In California, yes, but Pier Fishing In California is pretty generic. Like looking up Trout Fishing In America by Richard Brautigan. You will see that novel in the results, but there are other entries that have nothing to do with the book.
One reason (out of many) I discontinued my website was that I tired of seeing my illustrations ripped off and my writing reworded and recycled in other fishing pages. It is, as Ken says, immoral (amoral might be more appropriate), but there is little you can do about it. Perhaps contact them and request acknowledgement, but like so many of these young entrepreneur purloined sites, there is no there there insofar as a living person. Bots don't care. Neither does the guy who creates them.
Best of luck, Ken. We know who the real pierfisherman is.