Claim: Casco Bay was named "Bahía de Cascos" by Portuguese explorer Estêvão Gomes in 1525 but remained undiscovered by Native Americans.
Evidence: Casco Bay is an inlet of the Gulf of Maine on the southern coast of Maine, New England, United States. The Portuguese explorer Estêvão Gomes, mapped the Maine coast in 1525 and named the bay "Bahía de Cascos" (Bay of Helmets, based on the shape of the bay). At the time of European contact in the sixteenth century, people speaking an Eastern dialect of the Wabanaki language inhabited present-day Casco Bay.