Marina Greenwich opened in 2003 as Altea's first purpose-built leisure harbor, anchoring a two-kilometer waterfront that had hosted fishing skiffs for three centuries. The 240-berth marina sits at the base of the Old Town's white-domed Virgen del Consuelo church, whose blue-tiled cupola serves as a navigational landmark visible five nautical miles offshore. Jet ski operations arrived in 2008, the same year Alicante province designated the coastline between Altea and Calpe a recreational zone, permitting motorized craft within a marked corridor that runs parallel to the shore. The jetty at Puerto Deportivo extends 180 meters into the Bahía de Altea, a crescent bay sheltered by the Serra Bernia massif to the north and the limestone cliffs of Morro de Toix to the south. Morning outbound routes follow the shoreline past Playa Cap Blanch and the rocky inlets of La Olla, where depth drops from three meters to eighteen within a hundred meters of the beach. The Morro de Toix headland rises 190 meters above the waterline, its western face honeycombed with sea caves that remain accessible only by watercraft. Guides working the jet ski altea tours route their groups into the largest grotto, Cueva del Llop Marí, where the ceiling vaults to twelve meters and light refracts through submerged limestone ledges. Altea's position midway along the Costa Blanca coast makes it a departure point for longer circuits. The ten-kilometer stretch between Marina Greenwich and Calpe's Peñón de Ifach takes twenty minutes at cruising speed, passing the cove beaches of Mascarat and the cliffside villas of Sierra de Altea. Water temperature holds at 18°C through May, climbing to 26°C by August, and the prevailing east wind rises after noon, building one-meter swells by mid-afternoon. Operators limit jet ski rentals to the 10:00–18:00 window, when onshore facilities at the marina provide fuel, safety briefings, and wetsuit rental. The expansion of watersports tourism in Altea parallels the town's broader shift from agriculture to service economy. Census data from 2020 recorded 23,000 permanent residents, a figure that doubles during July and August as Northern European visitors fill the hillside apartments above the marina. Jet ski activity peaks in summer months, when daily rental counts at Puerto Deportivo exceed sixty units across four licensed operators, all sharing the same departure pontoon at the marina's southern end.