Grotta dei Gamberi is a deep cave and wall site located off Ventotene, Ischia. The site features a challenging overhead environment with depths ranging from 38 to 49 metres, averaging 45 metres. Divers must navigate moderate currents and variable visibility, which can fluctuate between 10 and 30 metres. Due to the depth and cave structure, this site is strictly for advanced divers with appropriate technical certifications. A drysuit or thick wetsuit is recommended to manage water temperatures between 14 and 18 degrees Celsius. Boat access is required, and divers should carry primary and backup lighting for the cave entrance.

Punta dell Arco in Ischia, Italy, offers a diverse underwater topography featuring reefs, walls, canyons, and caves. Located 50 metres from the shore, this site is suitable for advanced divers due to its depth range of 5 to 45 metres, with an average depth of 25 metres. Divers can access the site by boat or from the shore. Conditions are generally stable with mild currents and visibility ranging from 10 to 30 metres. Water temperatures fluctuate between 14C and 18C throughout the year. Given the significant depth, this site requires careful planning and experience.

Parata della Postina is a reef site located 500 metres off the coast of Ischia, Italy. This location is defined by its unique geological formations, specifically semi-submerged tuff arches. The site is suitable for intermediate snorkellers, with depths ranging from 2 to 15 metres. Access is strictly by boat. Water temperatures fluctuate significantly throughout the year, ranging from 15C in the cooler months to 27C in August. Snorkellers should be aware of the presence of jellyfish in the area. The site offers a mild current, making it a manageable environment for those with appropriate experience.

Parata Grande is a rocky ridge located off the northwest coast of Ischia. This reef site features vertical walls and reaches depths between 2 and 15 metres, with an average depth of 8 metres. Due to local landslide risks, land access is closed, making boat access necessary for all visitors. The site is suitable for intermediate divers and offers a high-quality experience for snorkellers. Species recorded around this area include various wrasses, bream, scorpionfish, and common octopus. Divers should be aware of sharp coral present on the reef structure. Guided tours are available, and a cafe can be found nearby.

Cala Battaglia is a volcanic reef site on the southern coast of Ischia, Italy, characterised by black volcanic sand. This site is suitable for intermediate snorkellers and offers both shore and boat access. Marine life recorded at the site includes common sightings of Turkish wrasse and various snails. Divers and snorkellers may also encounter uncommon species such as scorpionfish, wide-eyed flounder, crabs, painted comber, bream, white seabream, tompot blenny, sphinx blenny, and salema porgy. Water temperatures fluctuate between 15C in the winter months and 27C during August, providing a varied environment for observing local Mediterranean species.

Le Sconciglie is a reef dive site located off the coast of Ischia, Italy. The site is accessed by boat and is suitable for beginner divers. The topography consists of a reef structure with a consistent depth of approximately 10 metres. Water temperatures in this area fluctuate throughout the year, ranging from 15C in the late winter and early spring to 26C during the peak of summer in August. As a boat-based dive, it offers a straightforward underwater experience for those looking to explore the local reef environment.

Cala Nave is a volcanic sand beach on Ventotene, offering accessible snorkeling around the Nave di Fuori and Scoglietello rocks. The site features a mix of reef and seagrass habitats, specifically Posidonia meadows. Depths range from 1 to 10 metres, with an average of 5 metres, making it suitable for beginners. Access is available from both the shore and by boat, located approximately 100 metres from the coast. Conditions are generally mild, though visibility can fluctuate between 5 and 20 metres. Water temperatures vary significantly throughout the year, ranging from 15C in winter to 27C in August. Be aware of jellyfish, which are a known hazard in these waters.

Cala Rossano is a sheltered sandy bay situated near the Porto Nuovo on Ischia. The site features calm, shallow waters, making it a suitable location for beginners and families. Snorkellers can explore the rocky edges that border the sandy bottom. Access to the water is via the shore. Water temperatures at this site vary throughout the year, ranging from 15C in the late winter and early spring months to 27C in August. The site provides a relaxed environment for those looking to snorkel in a protected coastal setting.