They are generally the same area the difference is when and what you can shoot.maybe i'm missin something... whats the difference other than what you are allowed to shoot?
sea duck map: http://www.dnr.state.md.us/wildlife/grzmap.pdf
Offshore Waterfowl map: http://www.dnr.state.md.us/wildlife/grzmap.pdf
they both clearly state you must be 800 yards from the shoreline...
That is not how I understand it, but I will check with NRP and get back to you.First of all, both maps you have posted are the offshore zone. Go back and look again, there is a difference between the two maps. You will notice the seaduck zone extends way back into some rivers. Of course they overlap in the main stem of the bay. Obviously, if you are in the overlap portion, you can shoot whatever happens to be legal that day. If you are set up in the seaduck zone, where it does not overlap the offshore, you are in essence in the seaduck only zone, so if a goose comes in, too bad.