Cova del Gegant is a sea cave situated between Vilanova and Sitges. The site is characterised by its cave entrance and the surrounding Punta de les Coves, which provide unique light play for visitors. Access to the cave is possible via both shore and boat, with many visitors choosing to arrive by kayak. Due to the overhead environment, this site is suited for advanced snorkellers. Water temperatures fluctuate throughout the year, ranging from 14C in the winter months to 27C in August. Facilities available at the site include changing rooms, showers, and toilets.

Cala de l'Home Mort is a secluded pebble beach located within the Garraf Natural Park near Sitges. The site features a rocky seabed and Posidonia seagrass meadows, providing visibility ranging from 6 to 15 metres. With depths between 2 and 10 metres and an average of 5 metres, it is well-suited for beginners. The entry is from the shore, and divers typically experience mild currents. Water temperatures fluctuate significantly throughout the year, ranging from 14C in winter to 27C in August. Facilities at the site include parking, a cafe, and first aid services. Divers and snorkellers should be aware of the presence of jellyfish and sea urchins.

Les Boles is a reef dive located off the coast of Barcelona, Spain, accessible only by boat. The site features a reef structure that reaches depths of 25 to 26 metres. With visibility averaging 5 metres, the site rewards methodical diving and good buoyancy control. A torch is recommended to highlight details within the reef structure. The site is suitable for beginners and supports night diving. Water temperatures fluctuate between 14C in winter and 24C in summer. Species recorded around this area include various wrasses, seabream, cuttlefish, catsharks, and crustaceans such as crabs and hermit crabs.

Les Anquines in Sitges is an artificial, circular beach protected by two large stone piers, creating a sheltered environment for snorkelers. The site is suitable for beginners due to its calm water conditions and shore entry. Visibility typically ranges between 6 and 12 metres. Marine life observed at the site includes common crabs and various snails, alongside less frequent sightings of European common cuttlefish, wrasses, Turkish wrasse, tompot blenny, white seabream, two-banded seabream, and salema porgy. Mauve stingers are also occasionally recorded. Facilities available at the location include parking, toilets, and showers.

Platja de la Barra in Barcelona, Spain, is a sheltered snorkel site defined by four artificial islets. These rocky structures form a lagoon environment that serves as a nursery for various marine organisms. The site is suitable for beginners and offers shore access. Conditions are generally mild, though water temperatures fluctuate significantly throughout the year, ranging from 14C in winter to 27C in summer. Snorkellers should be aware of sharp coral present in the area. Facilities including showers, toilets, and parking are available nearby. Species recorded around this area include various wrasses, bream, crabs, and occasional jellyfish or catsharks.

Puig de Sitges is a shallow reef located near Barcelona, Spain, offering an accessible dive for beginners. The site sits at a depth of 3 to 4 metres, with an average depth of 3 metres. Divers can access the reef via boat or shore entry. Conditions are generally calm with mild currents, though visibility is limited to approximately 5 metres. When entering from the shore, be cautious of sharp coral and rocks on the reef surface; wearing protective footwear is recommended to prevent injury. Typical dives last around 30 minutes. Nearby facilities include air fills, equipment rental, and a dive shop.

Els Arbrets is a marine site located in Barcelona, Spain, featuring a combination of reef and cave topography. Divers can explore these structures at a consistent depth of 10 to 11 metres. The site is accessible by boat only and is suited for intermediate divers due to the cave environment. Conditions include mild currents and visibility ranging from 5 to 10 metres. Water temperatures fluctuate significantly throughout the year, from 14C in winter to 27C in summer. Species recorded around this area include European Common Cuttlefish, various wrasses, White Seabream, and several species of crab.

Masía Blanca is a marine protected area located off the coast of Coma-ruga, featuring a rocky reef that outcrops from a large sandy beach. The site offers depths ranging from 4 to 16 metres, with an average of 10 metres, making it suitable for beginners. Divers and snorkellers can access the shallows directly from the shore, though boat access is recommended to reach the outer reef areas. Conditions include mild currents and visibility reaching up to 25 metres. Water temperatures fluctuate between 14C and 26C, influenced by the Brisamar spring which maintains a constant 18-21C flow. Facilities at the site include parking, toilets, showers, and first aid services.