Playa el Portús is a coastal site in Cartagena featuring a mineral landscape of cliffs and golden sand. The underwater topography consists of rocky reefs, caves, and overhangs located approximately 50 metres from the shore. Depths range from 2 to 15 metres, with an average of 8 metres, making the site suitable for beginners. Conditions are generally mild with visibility between 10 and 20 metres. Access is via a shore entry. Divers and snorkellers should be aware of overhead environments within the caves and the presence of sea urchins on the rocky substrate. Facilities at the beach include parking, toilets, showers, a rinse station, and a cafe.

Piedra Blanca is a deep reef site located off the coast of Cartagena, Spain. The topography features depths ranging from 20 to 35 metres, with an average depth of 27 metres. Divers must access this site by boat. Conditions are generally manageable with mild currents and visibility typically between 10 and 30 metres. Water temperatures fluctuate between 14 and 18 degrees Celsius, necessitating appropriate thermal protection. Due to the depth and the presence of sea urchins on the reef structure, this site is suited for intermediate divers who possess solid buoyancy control. Divers should exercise caution regarding hand and knee placement to avoid contact with sea urchins.

Isla de las Palomas features a diverse underwater topography comprising reef, wall, and artificial reef structures. The site ranges in depth from 8 to 40 metres, requiring intermediate skill levels and careful buoyancy control to manage the significant depth changes. Divers can expect visibility between 10 and 25 metres and mild currents. Water temperatures remain between 14 and 17 degrees Celsius, necessitating appropriate thermal protection. Access to the site is exclusively by boat. Divers should remain aware of sea urchins present on rocky surfaces and monitor bottom time closely when exploring the deeper wall sections.

Cueva de la Virgen is a cave and wall dive site in Cartagena, Spain, accessible only by boat. The site features a rock cavity with an entrance at 15 metres, leading to a vault open to the surface that admits natural light. Divers can observe stalactites and stalagmites within the cave structure. A freshwater spring flows from the cave, creating a halocline effect. The surrounding area includes wall topography and sandy sections. Depths at the site range from 5 to 16 metres, with visibility varying between 1 and 30 metres. Due to the cave environment and depth, this site is suitable for advanced divers.

Pecios del C B A is a wreck and artificial reef site located off Cabo de Palos, Spain. Reached exclusively by boat, the site sits at depths ranging from 14 to 22 metres, with an average depth of 18 metres. Visibility is variable, typically between 5 and 10 metres. The site is suited for advanced divers who can maintain disciplined buoyancy while navigating the wreck structures. Divers should be aware of entanglement risks and sharp edges on both the wrecks and surrounding rocks. Protective gloves are recommended to avoid injury from these sharp surfaces. Water temperatures fluctuate between 15C and 23C throughout the year.

The Harrier is one of three contemporary wrecks at the CBA Wrecks site near Cabo de Palos, Spain. Created by the Navy Diving Center, these structures rest on a sandy seabed and include a tugboat, a helicopter, and the Harrier aircraft. This site is accessible by boat and is suitable for beginner divers. Visibility at the site varies between 5 and 15 metres. Water temperatures fluctuate throughout the year, ranging from 15C in the winter months to 27C in August. The wrecks provide artificial structure in a sandy environment, serving as a refuge for local marine life.

Cabo Tinoso is a boat-accessible site near Cartagena offering diverse topography including reefs, walls, drop-offs, caves, and artificial reefs. Depths range from 3 to 54 metres, with an average of 25 metres. Visibility typically spans 15 to 30 metres, allowing for clear observation of the varied underwater terrain. Water temperatures remain between 14 and 17 degrees Celsius throughout the year. The site is suitable for intermediate divers, though it presents hazards including deep water, overhead environments, and mild currents that may intensify. Night diving is permitted. Divers should plan bottom times carefully and monitor depth gauges, particularly when exploring the caves and wrecks.

Cala del Bolete Grande is a wild cove located in Cartagena, Spain, accessible either by boat or via a 2.5km hike. This reef site is suitable for advanced divers and snorkellers, offering an average depth of 5 metres with a maximum depth of 10 metres. Conditions at this location vary, and the site is noted for its remote, natural setting. Water temperatures range from 15C in the winter months to 26C in August. As a reef environment, it provides a habitat for regional marine life, though specific species observations are not recorded for this location.