Linea Pecios Fontanet Hermanos Serrano is a wreck and artificial reef site located in Cartagena, Spain. The site sits at a consistent depth of approximately 12 metres, making it suitable for beginner divers. Access to the site is by boat, and divers can expect mild currents during their 45-minute dives. Water temperatures fluctuate throughout the year, ranging from 15C in the winter months to 26C in August. Local facilities supporting the site include parking, air fills, equipment rental, dive shops, and guided tours.

Los Meros is a boat-access dive site located off the coast near Aguilas and Calabardina. The topography features a combination of reef and wall structures that descend to depths of 30 to 35 metres. Due to the significant depth, this site is suited for intermediate divers with appropriate deep diving training. Visibility at the site ranges from 10 to 30 metres, and currents are typically mild. Water temperatures fluctuate between 14 and 18 degrees Celsius throughout the year, necessitating appropriate thermal protection. Divers should monitor their computers closely to manage bottom time and no-decompression limits during the typical 35-minute dive.

Piedra de Santa Maria is a reef site located off the coast near Aguilas and Calabardina. The site reaches depths between 17 and 21 metres, with an average depth of 19 metres. Access is by boat only, and the site is suitable for beginners due to the lack of current. Visibility varies significantly, ranging from 5 to 30 metres. Water temperatures fluctuate between 15C and 23C throughout the year. Species recorded around this area include Mediterranean Moray, Common Octopus, European Common Cuttlefish, Great Barracuda, various wrasses, Scorpionfish, Cratena Slug, Kingfish, Rock Cod, Turkish Wrasse, Stargazer, Fried Egg Jellyfish, Groupers, and Conger Eel.

Playa de Calabardina provides a diverse underwater environment featuring reefs, walls, caves, wrecks, and seagrass beds. Accessible via shore entry, the site is suitable for beginners with depths ranging from 5 to 25 metres and an average of 15 metres. Conditions are generally mild, with visibility fluctuating between 5 and 25 metres. Water temperatures vary from 15C in winter to 21C in August. Divers should remain vigilant regarding boat traffic, as the area is active with surface vessels. A full range of facilities is available on-site, including equipment rental, air fills, and guided tours, supporting multi-dive planning.

Punta del Viento is a reef and wall site located off the coast near Aguilas and Calabardina. The topography features a descent ranging from 15 to 28 metres, with an average depth of 25 metres. Conditions are generally mild, with visibility typically between 5 and 10 metres. Access is exclusively by boat, requiring divers to enter and exit directly from the vessel. Due to the presence of sharp coral and rocks on the reef and wall, divers should maintain careful buoyancy control to avoid contact. Water temperatures fluctuate between 15 and 19 degrees Celsius throughout the year, necessitating appropriate thermal protection for the 50-minute typical dive duration.

Los Covachos is an advanced open sea dive site located in Cartagena, Spain. The topography is diverse, featuring a combination of walls, pinnacles, and the remains of several fishing boats intentionally sunk in the early 2000s. Divers can expect depths reaching 40 metres. Due to the exposed nature of the site, boat access is required. Conditions are characterised by strong currents, which may necessitate performing safety stops while drifting in the blue. Water temperatures range from 14C to 17C throughout the year. This site is suited for experienced divers comfortable with deep water and current management.

Cala Rayo is a shallow reef and wall site located 500 metres offshore from Cartagena, Spain. Reaching depths of 1 to 6 metres with an average of 4 metres, this site is suitable for beginners. Visibility ranges from 10 to 30 metres, allowing for clear observation of the reef structure. Access is by boat only, and divers should be prepared for moderate currents. Due to the presence of sharp coral and rocks, protective footwear and gloves are recommended to avoid injury. Typical dive times are approximately 45 minutes. As there are no fixed facilities at the site, confirm boat arrangements with a local operator in Aguilas or Calabardina before travelling.

El Jardín is a boat-access snorkel site located near Calabardina, Cartagena. The site is characterised by shallow walls that feature a variety of colourful invertebrates. These structures create a dense carpet of life along the rock faces, which is best observed on calm days when visibility is optimal. The site is suited for intermediate snorkelers due to the nature of the terrain and the requirement for boat entry. Water temperatures at this location fluctuate throughout the year, ranging from 15C in the winter months to 27C during the peak of summer.