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.

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.

Plaer del Vell is a reef site located off Mataro, Spain, accessible exclusively by boat. The reef structure extends from the surface to a maximum depth of 24 metres, allowing divers to select a depth profile suited to their experience level. Conditions are generally mild, with currents typically remaining light. Due to the nature of the site, divers must maintain awareness of boat traffic during surface intervals and ascents. The site is suitable for beginners, though constant monitoring of depth gauges is necessary given the reef topography. Water temperatures fluctuate seasonally between 13 and 23 degrees Celsius.

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.

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 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 Pujol is a reef site located in Mataro, Spain, offering visibility between 20 and 30 metres. The topography extends from the shallows down to a maximum depth of 28 metres. Divers access this site exclusively by boat. Conditions are generally comfortable with mild currents, though the depth requires careful monitoring of bottom time to manage decompression risk. The site is suited for intermediate divers who can maintain buoyancy and depth control. Mediterranean fish, conger eels, moray eels, lobsters, and sunfish are recorded at this site.

Negre Centre in Mataro, Spain, is a marine dive site featuring a combination of reef and wall topography. The site is suitable for intermediate divers and requires boat access. Depths range from 4 to 35 metres, with an average depth of 18 metres. Conditions at the site are variable, and divers should be aware of the potential for moderate to strong currents. Water temperatures fluctuate throughout the year, ranging from 13C in February to 20C between August and October. Due to the nature of the site and the presence of currents, it is recommended for those with appropriate experience.