Planetas is a reef site located off Mataro, Spain, suitable for beginner divers. The site features a depth range of 5 to 30 metres and mild currents. Visibility is variable, ranging from 5 to 25 metres, and divers should remain close to their guide or boat when visibility is low. Water temperatures fluctuate between 13C and 21C, requiring appropriate thermal protection such as a 7mm wetsuit or drysuit for cooler months. Access to the reef is by boat only. Species recorded around this area include wrasses, scorpionfish, sea stars, and various molluscs such as cow snails and nudibranchs.

Pujolet is a reef dive located off Mataro, Spain, requiring boat access. The site sits at depths between 26 and 29 metres, with an average depth of 28 metres, making it suitable for advanced divers. Divers should manage gas and no-decompression limits carefully due to the depth. Visibility ranges from 10 to 30 metres, and the site experiences mild currents. Species recorded around this area include common octopus, Mediterranean moray, wrasses, scorpionfish, and various sea stars. Given the depth, a surface marker buoy is recommended for boat pickup. Typical dive times are approximately 35 minutes.

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.

L’Ampurdanes is a wreck dive located 1600 metres off the coast of Mataro, Spain. The site reaches a maximum depth of 42 metres, requiring advanced certification and disciplined gas management. Divers access the wreck by boat, encountering moderate currents and visibility ranging from 10 to 30 metres. The structure presents an overhead environment with risks of entanglement, necessitating extreme caution during penetration. Due to the significant depth and potential for nitrogen narcosis, careful monitoring of decompression limits is essential. Water temperatures fluctuate between 13C and 20C throughout the year, making a drysuit or thick wetsuit advisable for comfort at these depths.

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.

Los Islotes is a reef and pinnacle site located 2000 metres off the coast of Mataro, Spain. Designed for advanced divers, the site features depths between 19 and 24 metres. The topography consists of rocky terrain requiring precise buoyancy control to avoid sharp coral and rocks. Divers should be prepared for mild currents, though surge and swell can occasionally increase the challenge. Visibility is highly variable, ranging from 5 to 30 metres depending on seasonal conditions. Access is strictly by boat, and divers must remain vigilant for boat traffic when surfacing. Water temperatures fluctuate significantly throughout the year, ranging from 13C in winter to 23C in summer.

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.

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.