I have spent 50+ yrs on the Chesapeake Bay and have seen the massive decline. Schools of menhaden a hundred yards across or more used to be common sight. Now you're lucky to see schools 50' across. Also, most are not adult menhaden. If Omega doesn't believe there is a local  depletion in the Chesapeake Bay then why do they travel north offshore and fish off the coast of New Jersey? Because they cannot catch their quota locally! What small schools we do see gather at the mouth of the bay on a given day are quickly scooped up the next!