evidence: Borders [edit]Most of Spain's boundaries are water: the Mediterranean Sea along the east from the French border down to Gibraltar and the Strait of Gibraltar, and the Atlantic Ocean on the northwest and southwest (in the south as the Gulf of Cádiz and in the north as the Bay of Biscay).[3] The Spanish autonomous cities of Ceuta and Melilla are Spanish enclaves lying in mainland Africa in territory claimed by Morocco and are located on the coast of the Alboran Sea, with Ceuta at the very mouth of the Strait of Gibraltar, and Melilla closer to the border with Algeria.[citation needed] The Canary Islands, geographically and geologically part of the African continent, are located in the Atlantic Ocean.[4]