El Santuario is an artificial wreck site located off the coast of Mataro, Spain. The site reaches a maximum depth of 23 metres and is accessible only by boat. Divers encounter mild currents and variable visibility, requiring careful buoyancy control and awareness of wreck penetration hazards. The structure features various recesses and encrusted surfaces that provide shelter for marine life, including moray eels, conger eels, octopuses, crabs, seahorses, and nudibranchs. Due to the depth and the nature of the wreck, this site is suited for intermediate divers. A torch is recommended to inspect the darker areas of the hull and crevices effectively.

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.

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.

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.

La Virgen is a marine dive site located off the coast of Mataro, Spain. The site features a consistent depth of approximately 10 metres. Water temperatures at this location vary throughout the year, ranging from a low of 13C in February to a high of 26C in August. Given the shallow and stable depth, the site is accessible for divers of various experience levels. Divers should be prepared for seasonal temperature fluctuations when planning their visits to this Mediterranean location.

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.