La Pedra Den Cinto is a reef and wall dive site located off the coast of Mataro, Spain. The site features a consistent depth range between 9 and 10 metres, making it suitable for beginner divers. Access to the site is by boat, and underwater conditions typically involve mild currents. Divers can expect a standard dive duration of approximately 40 minutes. Water temperatures fluctuate throughout the year, ranging from a low of 13C in February to a high of 26C in August. As a shallow reef and wall formation, it offers a straightforward environment for those developing their diving skills in the Mediterranean.

Las Conchas is a rocky reef located off Mataro, Spain, accessible only by boat. The site features a reef structure reaching depths between 14 and 23 metres, requiring careful monitoring of depth and air consumption. Divers encounter patches of Posidonia seagrass and rocky formations throughout the area. Conditions include mild currents, though visibility can vary significantly between visits. The site is suitable for beginners, but good buoyancy control is necessary to avoid sharp rock edges. Divers should exercise caution when re-entering the boat due to the rocky terrain. It is recommended to check local conditions and visibility with boat operators before planning a dive.

Alguer de Mataró is a vast meadow of Posidonia oceanica seagrass located 1600 metres off the coast of Mataro, Spain. This site is accessible only by boat and is suitable for intermediate divers and snorkellers. Depths range from 5 to 20 metres, with an average of 10 metres. Visibility varies between 10 and 30 metres, and currents are generally mild. Species recorded around this area include Mediterranean moray, common octopus, great barracuda, marbled electric ray, various wrasses, scorpionfish, and sea stars. Due to the location, divers and snorkellers should remain aware of boat traffic in the area. Facilities including equipment rental and air fills are available nearby.

Las Santas is an artificial reef located off Mataro, Spain, designed to provide a accessible environment for divers. The site sits at a maximum depth of 10 metres, making it suitable for beginners and allowing for extended bottom times. Visibility at the site fluctuates between 5 and 30 metres, while currents remain mild. Access is exclusively by boat. Divers should be aware of active boat traffic in the area and are advised to deploy a surface marker buoy before ascending. Protective gear is recommended to avoid contact with sharp edges on the structure, and divers should check for jellyfish before entering the water.

La Barra Nova is a reef site located off Mataro, Spain, suitable for beginner divers. The reef structure extends from the surface to a maximum depth of 18 metres. Divers can expect mild currents, though visibility varies between visits. Access to this site requires a boat. Due to the nature of boat-entry sites, divers must remain alert for boat traffic throughout the dive and during surface intervals. Water temperatures fluctuate significantly throughout the year, ranging from 13C in February to 24C in August and September, necessitating appropriate thermal protection based on the season.

El Circus is a reef site located off Mataro, Spain, accessible exclusively by boat. The site features a reef structure reaching depths of up to 18 metres, characterised by mild currents. It is well-suited for beginner divers looking to build confidence in a manageable environment. Divers should be aware of sharp rock formations throughout the reef and exercise caution regarding boat traffic during surface intervals and ascents. Water temperatures fluctuate seasonally, ranging from 13C in February to 24C in August and September. Due to the nature of the reef, wearing gloves is recommended to protect against contact with the sharp rock.

La Calzada is an offshore rock barrier located near Mataro, Spain. This reef site features depths ranging from 15 to 20 metres, making it suitable for intermediate snorkelers and divers. Access to the site requires a boat. Water temperatures fluctuate throughout the year, ranging from 13C in February to 26C in August. Facilities available in the area include parking, showers, changing rooms, air fills, equipment rental, and a dive shop. Due to the moderate currents and depth, this site is best suited for those with previous experience in open water environments.

Barreta D’en Serra is a reef dive located off Mataro, Spain, suitable for beginner divers. The site features a rocky structure reaching depths between 18 and 20 metres, with an average depth of 19 metres. Access is by boat, and divers typically experience mild currents. Visibility at the site can vary, so checking local reports before departure is recommended. Water temperatures fluctuate significantly throughout the year, ranging from 13C in winter to 24C in late summer. Species recorded around this area include Mediterranean moray, common octopus, marbled electric ray, great barracuda, various wrasses, scorpionfish, and sea stars, alongside several nudibranch and flatworm species.