Estepona's marina awakens at dusk when charter vessels cast off into the lilac haze between Gibraltar and Marbella. The town claims fifty kilometres of coastline, most of it open water where bottlenose dolphins hunt the thermocline and the Sierra Bermeja mountains drop their last shadows across the sea. Evening departures from Puerto Deportivo capitalize on the westward orientation — vessels track the descending sun over the Strait, catching refracted light that turns the water amber and the wake phosphorescent. The Costa del Sol sunset boat cruise Estepona tradition rose alongside the marina's expansion in the late 1990s, when the port added two hundred berths and boutique sailing operations began targeting the gap between package tours and private yacht charters. Operators standardized the golden hour window — nineteen hundred to twenty-one hundred hours — to align with the town's latitude and the predictable offshore breeze that flattens the chop at twilight. Shared group departures democratized access to what had been the preserve of villa owners, offering cava service and dolphin sightings at a fraction of private charter rates. Dolphins figure prominently in Estepona sunset tours not as a gimmick but as reliable inhabitants of the coastal shallows. Pod sightings peak during the cooler months when sardine runs concentrate near the surface, yet summer evenings still yield encounters — animals surface to breathe, sometimes bow-riding the slow-moving catamarans and sailing yachts that favor the route between Estepona and Casares Costa. Skippers cut engines when cetaceans appear, a protocol enforced by Andalusian maritime authorities to prevent propeller strikes. The sailing experience itself balances movement and stillness. Departures follow a northwest bearing toward the open water beyond the marina breakwater, where the Alboran Sea current meets the Mediterranean proper. Vessels hold position during the sun's final descent, allowing passengers unobstructed views of the horizon line where Africa's Rif Mountains form a dark seam against the sky. The return leg, under failing light, navigates by the illuminated promenade and the whitewashed facades of Estepona's old quarter, landmarks that guide crews back to the mooring without electronic aids. Operators provision these trips with local wine and simple tapas, reinforcing the Mediterranean ritual of observing the day's end with food, drink, and water underfoot.