I dont believe the oxegon levels are any different now than they have always been.
I think its just another way to phase sportsfishermen out of the equation.

If the oxegon levels were so low then how the hell did we have such a great shrimp season. if the oxegon levels are so low how come I was slaying bottomfish in 150 to 200 feet of water up to the time they closed it. How come the only fish washing up dead on the beach are perch which the beach seiners are dumping after they went bad because they wanted to go drinking instead of selling there catch.

THERE IS SOMETHING FISHY GOING ON!