Los Cubos is an artificial wreck site located off Mataro, Spain. The structure sits at depths reaching 25 metres, requiring advanced diving skills. Access is strictly by boat, and divers must remain vigilant regarding active boat traffic when surfacing. The site features mild currents, though visibility can shift significantly depending on local conditions. Divers should maintain precise buoyancy control to avoid contact with the artificial structure. Due to water temperatures ranging from 13 to 23 degrees Celsius, appropriate thermal protection is recommended, particularly during the cooler months. The wreck environment demands careful monitoring of depth gauges throughout the dive.

Las Milanas is a shallow marine dive site located off the coast of Mataro, Spain. The site maintains a consistent depth of approximately 9 metres. Water temperatures fluctuate throughout the year, ranging from 13C in February to 26C in August. Species recorded around this area include common octopus, Mediterranean moray, great barracuda, various wrasses, scorpionfish, and torpedo rays. Divers may also encounter Mediterranean violet aeolids, Cratena slugs, cow snails, flatworms, sea stars, and Mediterranean cardinalfish. Given the shallow depth, the site is accessible for divers of various experience levels.

Montseny is a reef site located off Mataro, Spain, accessible only by boat. The topography drops from the surface to a maximum depth of 27 metres. Divers encounter a mild current, making navigation manageable for those with intermediate experience. The site features a complex reef structure with crevices and sharp rock edges that require careful manoeuvring. Due to the presence of heavy boat traffic in the area, the use of a surface marker buoy is essential for all ascents. Water temperatures fluctuate between 13C and 23C throughout the year, necessitating appropriate thermal protection based on the season.

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.

El Bosque is a marine dive site located in Mataro, Spain. The site features a consistent depth of approximately 9 to 10 metres. Conditions at this location vary throughout the year, with water temperatures ranging from 13C in February to 26C in August. Given the shallow depth profile, the site is accessible for divers of various experience levels. Access to the site is typically via boat, though local conditions should be checked prior to planning a dive. There is no specific data regarding marine life at this location.

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 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.