N Beach, the pond sounds a lot like the ones near my dad's house which is also right on the Chesapeake Bay but a little farther north than you. The water is very dark, almost black and tannic. Unfortunately, the water chemistry of those ponds is not very good for bluegill growth, reproduction or anything bluegill for that matter... Largemouths and white perch along with yellow perch, chain pickerel, pumpkinseed sunfish, flier, bullhead catfish, American Eels, creek chubsuckers and golden shiners seem to be the only fish I have found living in them.