Punta Sud is a reef wall located at the southern tip of Giannutri, Italy. The site features a slope that drops from 17 to 35 metres, with an average depth of 22 metres. Divers can access the site via boat or shore, though shore entries require caution due to potential surge and swell conditions near the rocks. Visibility typically ranges between 10 and 25 metres, and currents remain mild throughout the dive. Given the water temperatures of 14 to 19 degrees Celsius, appropriate thermal protection is recommended. Facilities including showers and toilets are available on site for post-dive use.

La Caciarella is a small cove located between two cliffs on the island of Giannutri. The site is known for the Grotta del Turco and a submerged statue of Christ the Redeemer, which rests at a depth of 15 metres. While the statue is situated at depth, it may be visible from the surface depending on water clarity. Access to the water is via the shore. This site is rated for intermediate snorkellers due to the nature of the coastal entry and the depth of the features. Water temperatures fluctuate throughout the year, ranging from 14C in March to 26C during the peak summer months of July and August.

Cala Grande on the island of Giannutri offers a varied underwater topography featuring reefs, walls, caves, and drop-offs. Divers can explore depths ranging from 10 to 30 metres, with an average depth of 20 metres. Access to this site is exclusively by boat. Conditions include mild currents, though divers should remain aware of potential strong currents and boat traffic in the area. Visibility at the site fluctuates between 5 and 25 metres. Typical dives last approximately 45 minutes. Facilities available at the location include showers and toilets. This site is suited for intermediate divers.

Cala dell'Olio is a rocky inlet situated beneath the Torre della Maddalena on the island of Giannutri. The site features a seabed composed of large boulders, creating a complex topography for exploration. Divers and snorkellers can expect depths ranging from 1 to 10 metres, with an average depth of 5 metres. Access to this site requires a boat. Conditions vary, with visibility ranging from 5 to 25 metres and mild currents. The water temperature fluctuates between 14C and 25C throughout the year. Due to the rocky environment, divers should be aware of sea urchins and sharp coral present in the area.

Cala Mar Morto on Giannutri is a shallow reef site defined by its calm waters, which are protected by a natural rock barrier and the nearby Isola Rossa. This site features shallow natural pools with depths ranging from 1 to 8 metres, averaging 4 metres. It is accessible via a shore entry and is suitable for beginners. Conditions are generally mild, with visibility typically between 5 and 15 metres. Water temperatures fluctuate seasonally, ranging from 14C in March to 25C in August and September. Parking facilities are available nearby. Divers should be aware of sharp coral present at the site.

Cala delle Caldane is a reef site located on Giglio Island, characterised by granite rock formations that create a complex underwater landscape. The site features numerous crevices within the rock structure. With depths ranging from 1 to 10 metres and an average of 5 metres, it is well-suited for beginners and snorkellers. Visibility typically varies between 10 and 25 metres, and currents are generally mild. Access is available via both boat and a coastal trail. Equipment rental and first aid facilities are available for visitors. The water temperature fluctuates throughout the year, ranging from 14C in March to 26C during the summer months.

Secca di Mezzo Canale is a technical dive site located 4800 metres off Giannutri. The topography consists of a reef, wall, and drop-off that descends from 24 metres to a maximum depth of 90 metres, with an average depth of 45 metres. Divers encounter strong currents throughout the water column, necessitating careful management of decompression schedules and gas planning. Visibility ranges from 10 to 30 metres, and water temperatures remain between 14 and 17 degrees Celsius. Due to the significant depth and current, this site is suitable only for expert divers. Boat access is required, and the use of a surface marker buoy is essential.

Punta Finestra is a marine dive site located 500 metres off the coast of Giannutri, Italy. This site features a combination of cave, wall, and reef topography, requiring boat access. Divers can expect depths ranging from 15 to 28 metres, with an average depth of 25 metres. Conditions vary, with visibility typically between 5 and 20 metres and mild currents. The site is suitable for intermediate divers, with a typical dive duration of 45 minutes. Species recorded around this area include common octopus, Mediterranean moray, common lobster, wrasses, gorgon's head, flatworms, cow snails, cratena slugs, scorpionfish, sea stars, painted comber, yellow zoanthids, soft coral, and various snails.