Xori B is a boat-access reef located 1000 metres off the coast of Mataro, Spain. The site features a reef structure ranging from 5 to 18 metres in depth, with an average depth of 12 metres. Conditions are generally mild, with visibility typically between 5 and 15 metres. The site is suitable for beginner divers, though caution is required around the reef structure due to sharp coral and rocks. Divers should avoid contact with the sea floor and reef surfaces to prevent injury. Boat charters and guided tours are available through local dive shops to facilitate access to the site.

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.

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.

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.

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.

Negre is a marine site in Mataro, Spain, featuring a combination of a shallow reef and a wall that descends to 25 metres. With an average depth of 13 metres and mild currents, the site is suitable for beginners. Visibility ranges from 10 to 30 metres, allowing for clear observation of the white gorgonians and rock fauna. Species recorded around this area include Mediterranean moray, common octopus, great barracuda, marbled electric ray, wrasses, Turkish wrasse, flatworms, Mediterranean violet aeolid, cow snail, scorpionfish, Cratena slug, flamingo tongue, torpedo ray, and sea stars. Boat access is required, and local facilities provide air fills and charter services.

El Triangle is a reef site located 1000 metres offshore from Mataro, Spain. Accessible only by boat, the site features a rocky reef structure ranging from 8 to 20 metres in depth, with an average depth of 12 metres. Divers can expect mild currents and visibility typically between 10 and 25 metres. The site is suitable for beginner divers, though careful buoyancy control is required to avoid contact with sharp rocks and sea urchins found within the reef crevices. Water temperatures fluctuate seasonally from 13C in winter to 24C in late summer, necessitating appropriate thermal protection for the time of year.

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.