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.

Cala dei Santi is a boat-accessible site located 500 metres off the coast of Giannutri. The topography consists of rocky reefs, Posidonia meadows, and small caves, offering a varied underwater environment. Divers can explore depths ranging from 5 to 23 metres, with an average depth of 15 metres. Conditions are generally mild, with visibility between 10 and 25 metres. The site is suitable for beginners, though the presence of small caves introduces an overhead environment. Dives typically last around 40 minutes. Facilities available nearby include air fills, equipment rental, showers, toilets, and gear storage. Night diving is permitted at this location.

Punta Avoltore is a reef and wall dive located off the coast of Giannutri, Italy. The site features a wall that descends from 25 to 35 metres, with an average depth of 30 metres. Divers experience mild currents and visibility ranging from 10 to 30 metres. Due to the presence of sharp coral and rock formations, precise buoyancy control is required to avoid injury. Access is strictly by boat, and the site is suitable for intermediate divers. Water temperatures fluctuate between 14C and 19C, requiring appropriate thermal protection. Night diving is available, offering a different perspective of the reef environment.

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 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 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.

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.

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.