Scoglio Del Diamante is a marine dive site located in Portofino, Italy, featuring a combination of reef, wall, and cave topography. The site reaches depths between 7 and 40 metres, with an average depth of 28 metres. Divers typically experience mild currents and visibility ranging from 15 to 20 metres. Access to the site is by boat only, and the average dive duration is 45 minutes. Due to the depth, this site is suited for intermediate divers. Water temperatures fluctuate between 14C and 18C throughout the year. As a deep site, divers should manage their profiles carefully during their descent and ascent.

Cala degli Inglesi is a reef and wreck site located within the Portofino Marine Park. The topography consists of large boulders, with depths ranging from 20 to 40 metres. Divers can access the site by boat or via a challenging hike from the shore. Conditions are generally suitable for intermediate divers, with visibility typically between 15 and 30 metres and mild currents. Water temperatures fluctuate between 14C and 18C throughout the year. Due to the location, divers should remain aware of potential boat traffic in the area. The site offers a remote experience, and the cove is also well-regarded for snorkelling.

Altare is a marine dive site located 1500 metres off the coast of Portofino, Italy. The site features a complex topography consisting of a reef, wall, drop-off, and pinnacle. Divers typically explore between 10 and 40 metres, with an average depth of 20 metres. Access is by boat only. Conditions vary, with visibility ranging from 5 to 25 metres and moderate currents present. The site is suitable for intermediate divers and supports night diving. Hazards include boat traffic, cold water, decompression, deep water, low visibility, nitrogen narcosis, sharp coral, strong currents, and thermoclines. Water temperatures fluctuate between 14C and 18C throughout the year.

Testa del Leone is a wall and reef site located in Portofino, Italy, characterised by a colourful wall and a series of ravines and clefts. The site reaches depths between 6 and 40 metres, with an average depth of 25 metres. A notable feature is a freshwater spring that creates a halocline effect at approximately 10 to 12 metres. Access to this site is by boat only. Conditions include mild currents and visibility ranging from 4 to 20 metres. Water temperatures fluctuate between 14C and 18C throughout the year. This site is suitable for intermediate divers.

Scoglio del Raviolo, also known as Scoglio Ghisotti, is a diverse marine site near Portofino featuring a rocky cliff that extends underwater into a complex topography of reefs, walls, and caverns. The site is accessible only by boat, located approximately 1000 metres from the shore. Divers can explore depths ranging from 5 to 40 metres, with an average depth of 25 metres. Conditions typically include mild currents and visibility between 10 and 20 metres. Due to the presence of overhead environments, deep sections, and potential entanglement hazards, this site is suited for intermediate divers. Water temperatures fluctuate between 14C and 18C throughout the year.

Punta Vessinaro is a marine dive site located 1000 metres off the coast of Portofino, Italy. The topography consists of a wall, canyon, and reef system reaching depths between 18 and 40 metres, with an average depth of 35 metres. Access is by boat only. The site features patches of Posidonia oceanica and red gorgonian specimens, particularly at depths starting around 30 metres. Divers may encounter moderate currents and visibility ranging from 5 to 15 metres. Water temperatures fluctuate between 14C and 18C throughout the year. Species recorded around this area include wrasses, Mediterranean moray, scorpionfish, and various nudibranchs.

Targa Gonzatti is a wall and reef dive site located near Portofino, Italy. The topography consists of a wall transition between rocky substrates and posidonia meadows. Divers can explore depths ranging from 5 to 45 metres. Access to this site is by boat only. Conditions are variable, with visibility ranging from 1 to 30 metres and mild currents. Due to the depth profile, this site is suited for intermediate divers. Hazards include the potential for nitrogen narcosis and strong currents. Local facilities provide air fills, equipment rental, boat charters, and guided tours.

Relitto dello Schooner is a wooden wreck located within the Portofino Marine Park. The site rests at depths between 22 and 40 metres, with an average depth of 30 metres. Access is by boat only. Visibility typically ranges from 10 to 30 metres, and currents are generally mild. Due to the depth and potential for nitrogen narcosis, this site is suited for intermediate divers. Divers should be aware of entanglement hazards within the wreck structure and monitor decompression limits closely. A torch is recommended for exploring the darker interior sections of the vessel. Water temperatures vary between 14C and 18C, making appropriate thermal protection necessary.