Grotta del Ciclope is a notable sea cave located near the Tonnara di Santa Panagia, north of the Siracusa city centre. The site features rocky drop-offs and is situated outside the main marine reserve. Snorkellers can access the site from both the shore and by boat. Water temperatures at this location vary significantly throughout the year, ranging from 15C in the winter months to 27C in August. Due to the nature of the cave environment and the surrounding topography, this site is recommended for advanced snorkellers.

Cala Zaffiro (Varco 27) is a coastal inlet near Siracusa featuring limestone formations, a natural rocky pool, and an underwater statue of a mermaid. The site offers a mix of reef and cave topography, with depths ranging from 15 to 30 metres and an average of 20 metres. Shore access is available, and the site is suitable for beginners. Divers and snorkellers should be aware of potential boat traffic, sea urchins, and thermoclines. Visibility varies between 5 and 25 metres, and water temperatures fluctuate between 15C and 22C, influenced by the meeting of warm and cold currents.

Costa Bianca (Varco 24) is defined by striking white limestone cliffs that create a rugged coastal environment. The site features various underwater caves and arches accessible from the shore. The seabed drops off quickly, providing visibility for those navigating the area. Due to the nature of the terrain and these drop-offs, the site is suited for intermediate snorkellers. Water temperatures at this location vary throughout the year, ranging from 15C in the winter months to 27C during the peak of summer.

Grotta delle Stalattiti is a marine cave and reef system located near Siracusa, Italy. The site features submerged stalactites and a distinct play of light within the cavern. Divers and snorkellers can explore a drop-off with depths ranging from 10 to 20 metres, averaging 14 metres. Access is exclusively by boat. Conditions include moderate currents and potential surge, requiring intermediate skill levels for divers. The water temperature fluctuates between 15C and 24C throughout the year. Due to the physical nature of the cave environment, divers should be aware of sharp coral formations present at the site.

Pillirina, located within the Plemmirio Marine Protected Area, features a dramatic rocky coastline with a mix of shallow sandy patches and deep rocky crevices. This site offers both reef and cave topography, with depths ranging from 2 to 15 metres and an average of 7 metres. Entry is via the shore, and divers can expect mild currents and visibility between 10 and 25 metres. It is suitable for intermediate divers and is highly rated for snorkelling. Species recorded around this area include Mediterranean Moray, Turkish Wrasse, European Parrotfish, and various seabream. Hazards include sea urchins and sharp coral. Parking is available at the site.

Lingua del Gigante, located off Siracusa, offers a diverse underwater environment featuring a reef, wall, drop-off, and cave system. Divers can explore depths between 15 and 30 metres, with an average depth of 22 metres. Visibility ranges from 10 to 30 metres, providing clear views of the topography. Access is exclusively by boat, and the site is suited for intermediate divers due to moderate to strong currents that can shift quickly. Water temperatures fluctuate between 15 and 22 degrees Celsius throughout the year. Species recorded around this area include Mediterranean Moray, Turkish Wrasse, European Parrotfish, and various seabream and wrasse species.

Grotta del Formaggio is a shore-entry site near Siracusa that combines open reef structure with cave exploration. Divers navigate a constant depth of 15 metres, moving between the reef and the cave interior. The site experiences moderate currents, and visibility can vary significantly between visits. Due to the cave environment, a torch is recommended regardless of ambient light levels. Water temperatures fluctuate from 15C in winter to 25C in summer. This site is suitable for intermediate divers who should check local conditions before entry, as the combination of cave navigation and variable visibility requires careful planning.

Ognina, located south of Siracusa, is a marine site featuring a natural rocky solarium and diverse geological formations. The topography consists of a reef system punctuated by small sea caves. Divers and snorkellers can expect depths ranging from 1 to 15 metres, with an average depth of 5 metres. Conditions vary, with visibility between 5 and 20 metres and mild currents. Access is via the shore, making it suitable for beginners. Hazards include potential entanglement, jellyfish, low visibility, overhead environments, sea urchins, sharp coral, and surf. On-site facilities include parking, showers, a cafe, a rinse station, and access to boat charters.