Tarifa is home to whale- and dolphin-watching excursions in the Strait of Gibraltar, which leave daily from the harbour. The trip is a fairly steep €30 (reductions for under-14s), but this includes another trip free of charge if there are no sightings. Places must be booked in advance from either of two non-profit-making organizations: Whale Watch, Avda. de la Constitución 6, close to the turismo (t956 682 247, reservations t639 476 544, wwhalewatchtarifa.net), and FIRMM (Foundation for Information and Research on Marine Mammals), c/Pedro Cortés 3, slightly west of the church of San Mateo (t956 627 008, wfirmm.org). A more commercial operation, Turmares, with an office on the beach road near the foot of the Paseo de la Alameda (t956 680 741, wturmares.com), also runs whale-spotting trips (€30, kids €20) with a glass-bottomed boat.