In Spain whale watching is available along the Strait of Gibraltar, the Canary Islands, and in the Bay of Biscay. Tarifa is the most important whale watching town in the Strait of Gibraltar; this gateway to the Mediterranean Sea is also a central point in between the colder waters to the North and the tropical waters off of Africa: a good route for migrating cetaceans. The species observed in this area are the bottlenose, common, and striped dolphin, and the pilot, sperm, fin, and killer whale.