Cala Ischiaiola, also known as The Arches, is a distinctive site located off the coast of Giannutri, Italy. This site features a complex topography of limestone walls, shallow caves, and natural underwater arches. With depths ranging from 2 to 10 metres and an average of 6 metres, it is well-suited for snorkeling. Visibility typically varies between 15 and 30 metres. Access to the site is by boat only, located 16 kilometres from the shore. Equipment rental is available for those visiting the area. The site is rated highly for snorkeling, offering an intermediate-level experience within the Tuscan Archipelago.

Gli Archetti is a reef site located off the coast of Isola di Giannutri. Accessible only by boat, the site features a depth range of 5 to 30 metres, with an average depth of 15 metres. It is suitable for beginner divers, offering mild currents and visibility between 10 and 30 metres. Water temperatures fluctuate between 14 and 19 degrees Celsius, necessitating a 5 mm wetsuit. Species recorded around this area include Mediterranean moray, common octopus, wrasses, gorgon's head, sea slugs, John Dory, and scorpionfish. Local facilities provide air fills, equipment rental, and guided tours to assist with your dive planning.

Punta Pennello is a long rocky formation extending into the sea on the west side of Giannutri. The topography features a diverse landscape of boulders and seagrass meadows that serve as a nursery for juvenile marine life. Divers encounter a wall and reef environment with depths ranging from 5 to 50 metres, averaging 20 metres. Conditions vary, with moderate currents and visibility typically between 10 and 30 metres. This site requires boat access and is suited for intermediate divers. Hazards include potential entanglement, sharp coral, and strong currents. Snorkellers can also enjoy the site, which holds a rating of 4/5.

Nasim is a deep-water dive site located off the coast of Giannutri, Italy. The site features a significant depth range of 45 to 60 metres, making it suitable for experienced technical divers. Access to the site is available via both shore and boat entries. Underwater visibility at Nasim varies between 10 and 30 metres depending on prevailing conditions. Water temperatures remain cool throughout the year, ranging from 14C to 17C. Due to the depth and environmental conditions, this site is intended for advanced divers with appropriate training and equipment for deep-water exploration.

Cala Maestra is a protected marine site located in Giannutri, Italy, offering a shallow environment ideal for snorkelling. The site features a combination of artificial reef structures, seagrass meadows, and natural reef formations. Divers and snorkellers can explore submerged Roman ruins near the shoreline alongside extensive Posidonia forests. Depths range from 1 to 5 metres, with an average of 3 metres. Entry is possible from both shore and boat. Conditions are generally mild with visibility fluctuating between 5 and 25 metres. Species recorded around this area include Mediterranean Moray, Common Octopus, Scorpionfish, John Dory, various wrasses, and several species of sea slugs.

Cala Spalmatoio serves as the primary landing point on Giannutri, offering a mix of artificial reef structures, seagrass beds, and historical interest. Divers and snorkellers can explore ancient Roman port remains located along the edges of the cove. The site features a sandy and pebble beach allowing for both shore and boat entries. Depths range from 2 to 20 metres, with an average of 5 metres, making it suitable for beginners. Visibility typically spans 10 to 25 metres, though users should remain aware of boat traffic in the area. Species recorded around this area include Mediterranean moray, common octopus, wrasses, John Dory, scorpionfish, and various sea slugs.

Cala Volo di Notte is a wall and reef site located on the island of Giannutri. The topography features high vertical walls that descend from 8 to 30 metres, with an average depth of 18 metres. Situated 100 metres from the shore, this site requires boat access due to the arduous nature of the surrounding cliffs. Divers can expect mild currents and visibility ranging from 10 to 25 metres. Water temperatures fluctuate between 14C and 19C throughout the year. The site is suited for intermediate divers, and the area is also suitable for snorkelling.

Grotta Maurizio Sarra is a technical cave dive located off Isola di Giannutri, Italy. The site features an overhead environment at depths ranging from 40 to 55 metres. Visibility is consistent at 30 metres, though divers must carry primary and backup lights for the cave interior. Water temperatures remain between 14 and 16 degrees Celsius, often featuring freshwater layers or haloclines. Access is by boat only, requiring pre-booked charters. Due to the depth and overhead environment, this site is reserved for expert divers with cave certification. Divers must maintain strict buoyancy control to avoid contact with sharp coral and rock structures while managing nitrogen narcosis risks.