Machias Seal Island Light, disputed water between the Gulf of Maine and the Bay of Fundy, Maine/New Brunswick. The lighthouse on Machias Seal Island is staffed by the Canadian Coast Guard. The island and its surrounding waters were declared a bird sanctuary in 1944. Its home to largest colony of puffins on the Atlantic Coast (south of the Gulf of St. Lawrence). During nesting season researchers reside on the island, keeping watch over the thousands of puffins, razorbills, murrs and other sea birds laying eggs and raising chicks. Machias Seal also attracts a lot of bird voyeurs from both sides of the bay, for that reason there also a resident warden on the island.