El Turó Blau is a reef site located in Mataro, Spain, suitable for beginner divers. The reef structure extends from the surface to a maximum depth of 25 metres. Access to the site is by boat only. Divers encounter mild currents, though conditions vary between visits. Marine life frequently observed includes Mediterranean Moray, wrasses, scorpionfish, and various nudibranchs such as the Cratena Slug and Mediterranean Violet Aeolid. Other species recorded at the site include Common Octopus, Turkish Wrasse, and occasionally Slipper Lobster or Torpedo Ray. Water temperatures fluctuate between 13C and 23C throughout the year, requiring appropriate thermal protection during cooler months.

Balis 22 is a reef site located off Mataro, Spain, accessible only by boat. The reef structure extends from the surface to a maximum depth of 21 metres, making it suitable for beginner divers. Conditions are generally mild, with currents described as mild and visibility ranging between 15 and 30 metres. Water temperatures fluctuate significantly throughout the year, from 13C in winter to 24C in late summer, requiring appropriate thermal protection. Divers can explore the reef surface and its various crevices. Local facilities include a dive shop and equipment rental services, allowing visitors to source gear on-site.

El Muro is a wall dive located in Mataro, Spain, featuring a vertical structure that descends to a maximum depth of 23 metres. The site is suited for advanced divers due to the presence of moderate currents and the requirement for boat access. Divers should maintain solid buoyancy control and situational awareness throughout the dive. Water temperatures fluctuate between 13C and 23C depending on the time of year. Because of active boat traffic in the area, it is essential to deploy a surface marker buoy before ascending and to remain close to the wall during safety stops to ensure visibility to passing vessels.

El Dorado is a reef site located in Mataro, Spain, reaching depths of up to 22 metres. The site features a rocky substrate and reef structure that requires careful navigation due to variable visibility. Divers should expect mild currents, making buoyancy management relatively straightforward. Given the range of water temperatures from 13C to 24C, divers should select appropriate exposure protection based on the season. As facilities are limited, it is essential to confirm boat logistics and equipment availability with a local operator before arrival. Always carry a surface marker buoy, as surface conditions can change between dives.

El Tortu is a reef site located 1500 metres off the coast of Mataro, Spain. This site is suitable for beginners, featuring a consistent average depth of 10 metres. Access is exclusively by boat. Conditions vary, with visibility ranging from 5 to 25 metres and currents typically remaining mild. Water temperatures fluctuate significantly throughout the year, from 13C in February to 26C in August. Species recorded around this area include common octopus, Mediterranean moray, great barracuda, various wrasses, scorpionfish, and several nudibranch species such as the Mediterranean violet aeolid and Cratena slug. Divers should be aware of sharp coral present at the site.

L'Ancora del Negre is a wall and reef site located off Mataro, Spain, offering a deep-water experience for advanced divers. The topography features a rocky wall that descends to depths between 25 and 35 metres. Due to the significant depth, divers must maintain strict buoyancy control and adhere to decompression limits. Access is exclusively by boat, and conditions such as visibility can be variable. Divers should monitor their depth gauges closely throughout the dive to manage the primary hazard of depth. The site is suited for experienced divers capable of managing deep-water protocols in mild current conditions.

Reyes is a reef dive located 3000 metres offshore from Mataro, Spain. The site features a reef structure situated between 21 and 26 metres, with an average depth of 25 metres. Due to the depth, this site is suited for advanced divers who can manage decompression limits and buoyancy control. Access is by boat only, and the site experiences mild currents. Visibility is variable, ranging from 6 to 30 metres. Water temperatures fluctuate significantly throughout the year, from 13C in winter to 23C in summer. Night diving is permitted at this location. Local facilities include air fills, equipment rental, and guided tours.

El Pico is a reef site located off Mataro, Spain, accessible only by boat. The topography features walls and crevices that extend to a maximum depth of 27 metres. Divers should be prepared for moderate currents throughout the site, which can affect ascent and descent. Visibility is variable, and the use of a torch is recommended to inspect the deeper recesses and crevices along the reef structure. Due to the depth and current conditions, this site is suited for advanced divers. Water temperatures fluctuate between 13C and 23C depending on the season, requiring appropriate thermal protection for the time of year.