I saw some sea duck shooting on OLN the other night. Have any of you guys done it? It looks like some good action. The birds were pretty; Scoter, Old Squaw, Eiders(?); but...one thing never got mentioned....How do they eat?

I've got an aunt in Searsport, ME who I may visit this Christmas, and if the times right & seasons are open I may try my hand at sea ducks.
Just curious.