
Hotel Cristina
★★★
★ 9.2/10 (1,903 reviews)
less than 1 km away as the crow flies
Dive centre · Los Alcazares · Spain
5.014 Google reviewsExplore the protected pinnacles of the Islas Hormigas Marine Reserve with small, guided groups of maximum four divers.

Located in Los Alcázares, MedSea Scuba serves as a gateway to the diverse marine environments of the Costa Cálida. The centre is ideally positioned to access both the sheltered bays of the Mar Menor and the more adventurous rocky coasts and marine reserves further afield near Cartagena.
Whether you are looking for the calm, shallow waters of a reef flat for training or the deeper, more complex structures of a marine reserve, the centre organises daily dives by reservation. Their approach combines local expertise with a commitment to environmental conservation, ensuring that the Mediterranean's delicate ecosystems are respected during every excursion.
The team consists of certified SSI instructors who provide instruction in English and Spanish. They maintain a strict ratio of one guide for every four divers, ensuring close supervision and a personalised experience for every member of the buddy pair.
Beyond standard recreational training, the centre offers specialised programmes including underwater photography workshops and marine biology educational dives. They also provide adaptive diving services and dedicated SSI Explorers programmes for children aged 6 to 11.
MedSea Scuba offers a comprehensive range of SSI training, beginning with Discover Scuba Diving for those new to the water. The curriculum follows the full progression from Open Water Diver and Advanced Open Water Diver through to Rescue Diver and Divemaster, as well as Instructor training.
For divers looking to push their boundaries, the centre provides technical diving advancement courses. They also host specialised workshops in underwater photography and marine biology to deepen your understanding of the underwater world.
Boat trips are available for excursions to sites like the Islas Hormigas and Isla Grosa. These modern vessels are equipped with enhanced safety features, GPS tracking, and weather monitoring systems to ensure safe navigation. On board, you will find comfortable seating and dedicated storage solutions for your kit, with some boats featuring underwater observation areas for non-divers.
The centre provides full equipment hire for divers who prefer not to carry their own kit. This includes all the necessary components for a complete dive rig, maintained to modern standards.
For those looking to expand their skills, the centre offers specialised training and refresher dives, including night shore dives at Cala Cortina. They also provide dive computer hire for specific charters, such as the Naranjito Wreck trip.
Islas Hormigas Marine Reserve is a premier destination where rocky pinnacles rise from the depths. This protected area is famous for its high density of fish and requires a dive permit, which is included in the boat dive price.
Naranjito Wreck, located near Isla Gomera, is a cargo wreck that rests upright with its bow at approximately 27 metres and the seabed at 44 metres. This site requires Advanced Open Water certification and is accessed via private charter for a maximum of four divers.
Cala Cortina is a sheltered bay with depths ranging from 4 to 26 metres, making it an ideal location for shore dives and night dives. The jetty foundations serve as an artificial reef, providing excellent habitats for various Mediterranean species.
Farallón is a rocky site featuring impressive underwater structures, including walls, ledges, and crevices. It is a preferred choice for boat dives where you can explore more adventurous terrain and larger fish populations.
And some of the dive sites the centre runs.
The marine life in this region is defined by the lush Posidonia seagrass meadows that carpet the seabed. These meadows provide a vital habitat for a variety of species, including seahorses, rays, and various flatfish that blend into the sandy patches.
On the rocky reefs and pinnacles, you will find a high concentration of crustaceans and cephalopods. Keep an eye out for octopuses, cuttlefish, and spiny lobsters hiding in the crevices, as well as spider crabs and moray eels patrolling the structures.
Pelagic life and larger fish are frequently encountered around the reserves and wrecks. You can expect to see schools of barracuda, dentex, amberjack, and grouper, alongside smaller residents like wrasses, seabream, and various species of snapper.
The area is characterised by generally low to moderate currents, though conditions at specific sites like Farallón can vary depending on the weather. The sheltered nature of bays like Cala Cortina offers easy entry and exit conditions for shore diving.
Visibility across the main dive sites typically ranges between 8 and 20 metres, providing clear views of the rocky topography and marine life.
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