Which is why I am asking for info here"Told" by what locals and how many? Divemasters? Grocery clerks? One local? Two locals? Ten locals?
So he didn't actually observe any fishing in the marine park.
Sorry, this is how rumors get started. Now, without any substance or verification, some people will be skimming Scubaboard threads and six months from now be telling people that they "remember" seeing "some discussion" about fishing in the marine park.
Obviously