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.

Punta Giasso, also known as Vitrale, is a diverse marine site located within the Portofino Marine Park. The topography features a combination of reef, wall, and seagrass habitats. Divers and snorkellers can explore depths ranging from 5 to 15 metres, with an average depth of 10 metres. Access to the site is by boat, as it is situated 1000 metres from the shore. Conditions vary, with moderate currents and visibility typically between 10 and 25 metres. Water temperatures fluctuate throughout the year, ranging from 14C in the winter to 23C in the summer months. The site is suitable for intermediate divers and offers excellent conditions for snorkelling.

Casa del Sindaco in Portofino, Italy, offers a varied underwater topography consisting of a wall, canyon, and reef. The site is suitable for advanced divers due to its depth range of 10 to 50 metres and the requirement for boat access. Divers should be aware of boat traffic in the area. Visibility at this location typically ranges between 5 and 15 metres, with water temperatures fluctuating between 14C and 17C throughout the year. As an advanced site, it provides a challenging environment for those experienced in deep diving and navigating complex underwater structures.

The Mohawk Deer is a Canadian freighter that sank in 1967 following a storm. Located 1500 metres offshore within the Portofino Marine Park, this wreck dive is suitable for intermediate divers. The vessel lies at depths ranging from 18 to 48 metres, with an average depth of 35 metres. Access is strictly by boat. Divers should be prepared for mild currents and visibility between 10 and 30 metres. Hazards include the depth, potential for entanglement, and the overhead environment of the wreck. Water temperatures fluctuate between 14C and 17C throughout the year. Facilities available nearby include air fills, equipment rental, and boat charters.

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.

Baia Cannone is a small cove located in Santa Margherita Ligure, offering a rocky seabed and reef environment suitable for beginners. Access is via a steep metal staircase leading from the main road down to the water. The site features depths starting at 3 metres, with visibility typically ranging between 15 and 30 metres. Conditions are generally mild, though snorkelers should be aware of potential surf. Facilities available at the site include changing rooms and showers. The location is well-suited for snorkelling, providing a sheltered environment near the cliffs of the Portofino Marine Park area.

San Giorgio is a reef dive located within the Portofino Marine Park, offering depths between 20 and 35 metres. The site is accessed by boat and is characterised by calm, current-free conditions, making it suitable for both beginners and advanced divers depending on the depth. Visibility typically ranges from 10 to 30 metres. Divers can observe common species such as wrasses and bream, alongside less frequent sightings of White-spotted Yellow Nudibranch, Gorgon's Head, Turkish Wrasse, Mediterranean Violet Aeolid, White Seabream, Mauve Stinger, Violescent Sea-whip, Sea Star, Marine Goldfish, Comber, Striped Red Mullet, and Mediterranean Cardinalfish. Water temperatures vary from 14 to 19C, necessitating a thicker wetsuit for deeper dives during spring and autumn.