Don't know. But possible, yes.
Doubt that this could happen in the states unless there were possible legal issues involved, like endangered species living on the breakwater.
In Holland we have a ban on any kind of fishing using scuba gear. The entire bottom of the ocean here is *covered* in lobsters, to the point where fishermen themselves have been lobbying government to allow divers to harvest them because lobsters eat *everything* and it is putting populations of other animals under pressure.
And even with the huge numbers of lobsters and support from the traditional foes of divers on this issue, if you're caught with a lobster in your car then the authorities will take away *all* of your diving gear... no fine, no slap on the wrist, no warning, you just lose all of your diving gear.
Needless to say, few divers dare to harvest even one lobster, which goes to show that if the sanction is heavy enough, people will conform.
Lobbying to get the site closed shouldn't be too hard. It's a well known site in the PNW and there is unlikely to be any public resistance to having it closed for hunting. Given that it's election time, it might even be possible to get a politician to do it for a small price of some free public exposure, a radio interview or small article in the newspaper and a few well timed tweets.
R..