Lighthouse in Portofino, Italy, is a marine dive site with a consistent depth of 13 metres. Conditions at this location vary, with water temperatures ranging from 14C in the winter months to 23C during the summer and early autumn. Species recorded around this area include wrasses, Mediterranean moray, great barracuda, common octopus, and European common cuttlefish. Divers may also encounter various invertebrates such as the cow snail, Mediterranean violet aeolid, banded coral shrimp, and Cratena slug. This site is suitable for divers looking for a shallow, consistent depth profile.

Il Bigo is a wall and reef site located off Portofino, Italy, featuring a depth range of 5 to 40 metres. The site is suitable for intermediate divers who can manage variable visibility and potential currents. Water temperatures fluctuate between 14 and 18 degrees Celsius, necessitating appropriate thermal protection. Access is exclusively by boat. Divers must remain vigilant regarding boat traffic at the surface and are advised to deploy a delayed surface marker buoy from depth. Due to the potential for strong currents and shifting conditions, it is recommended to consult with a local dive operator regarding the deeper sections of the wall before entry.

Olivetta Bay in the Portofino Marine Park offers a varied underwater topography featuring rocks, walls, and sandy patches covered in posidonia. Divers enter from the shore at a depth of six metres, with the seabed sloping gradually to a maximum of 25 metres. The site is suited for intermediate divers, with mild currents and visibility ranging between 15 and 30 metres. The walls are characterised by yellow parazoanthus growth. Water temperatures fluctuate throughout the year, ranging from 14C in late winter to 21C in September. Divers should be aware of sea urchins and sharp coral present in the 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.

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.

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.

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.

The Relitto del Genova is a wreck located 2000 metres offshore from Santa Margherita Ligure within the Portofino Marine Park. Resting at depths between 45 and 61 metres, this site is strictly for advanced and technical divers. Access is exclusively by boat. Divers can expect visibility ranging from 10 to 30 metres and water temperatures between 14 and 17 degrees Celsius. Due to the significant depth, strong currents, and heavy boat traffic on the surface, guided tours are recommended. Divers must monitor their depth gauges closely and manage gas planning appropriately for the deep profile of this wreck.