Sadly, LL is right. Legally, targeting anadromous Atlantics is forbidden in Maine due to their very, very sparse numbers here in the Pine Tree State. If you do accidentally hook one, you are required to release it unharmed, immediately, or have your left arm and right leg amputated without anesthesia by a warden with a rusty chainsaw. A tiny handful are taken by anglers fishing for smallmouths on the Penobscot every year, but you probably have a better chance of winning the lottery.
Landlocked Atlantics - the same fish, just in a smaller package - are a whole different story. Those can be found in many, many rivers and streams throughout the state and fishing for them is strongly encouraged. I don't spend much time chasing them, but I'd be happy to point out some of the streams where they can be found. Waters are pretty low and warm presently, so options are limited, but worth pursuing.
Smallmouth fishing is excellent right now and WAY underutilized, as in you have your choice of prime water, and you'll likely have it to yourself, especially mid-week (unless I'm there
). They are a magnificent spey rod fish.
PM by Friday AM if you'd like more info. (I'll be away from Friday until Monday.)