Secca Ubac is a shore-entry reef dive located off the coast of Pula, Croatia. The site features a reef structure that descends into deeper water, with depths ranging from 25 to 40 metres. Divers encounter mild currents and visibility typically between 5 and 10 metres. Due to the depth profile, the site is suitable for beginners who remain in the shallower sections, while the deeper areas are better suited for advanced divers. Water temperatures fluctuate between 11 and 18 degrees Celsius throughout the year, necessitating appropriate thermal protection such as a thick wetsuit or drysuit, particularly during cooler months.

Školjić Bay near Pula features a rugged landscape of rocky slabs and underwater canyons. The site is defined by its unique carved rock formations and two accessible underwater arches. With an average depth of 3 metres and a maximum of 6 metres, this shore-entry site is suited for intermediate divers and offers a high-quality snorkelling experience. Conditions are generally mild, though divers should be aware of sea urchins and sharp coral in the area. The site is well-supported by local facilities, including equipment rental, air fills, and guided tours, making it a practical location for exploring the Istrian coastline.

The Cesare Rosarol is a deep wreck located off the coast of Pula, Croatia, resting at depths between 45 and 49 metres. This site is strictly for advanced divers due to the significant depth, decompression requirements, and potential for strong currents. Visibility at the site typically ranges from 5 to 15 metres. Water temperatures are cold, fluctuating between 11 and 18 degrees Celsius, necessitating appropriate thermal protection. Divers must be prepared for an overhead environment with entanglement risks and the effects of nitrogen narcosis. Access to the wreck requires a boat charter, and careful planning of bottom time and gas supply is essential for safety.

Miracine, located on Krk Island, offers a combination of reef and cave diving across a depth range reaching 30 metres. Divers can expect visibility between 15 and 30 metres, with mild currents allowing for exploration of both shallow and deeper sections. Entry is from the shore, where caution is required due to potential surge and the presence of sharp rock and coral. Given the water temperatures ranging from 12 to 18 degrees Celsius, appropriate thermal protection is recommended. As there are no confirmed facilities on site, divers should arrive prepared with full tanks and all necessary equipment.

Metlikova on Krk Island is a wall and reef site featuring depths between 5 and 30 metres. The topography consists of a wall face that drops into the deeper sections, requiring intermediate skill levels to manage buoyancy and depth. Visibility at the site typically ranges from 10 to 30 metres. Access is exclusively by boat, and divers should monitor the mild current during descent. Water temperatures fluctuate between 12 and 18 degrees Celsius throughout the year. Species recorded around this area include wrasses, scorpionfish, various nudibranchs, and seabream, which inhabit the reef structure and surrounding water column.

Plava Grota on Krk Island is a sea cave featuring a large underwater entrance and a smaller siphon. This structure creates a distinct blue light effect within the cavern. The site is suitable for intermediate divers and snorkellers, with depths ranging from 3 to 12 metres. Conditions include mild currents and visibility between 10 and 30 metres. Water temperatures fluctuate between 12C and 25C, with the interior of the cave typically feeling colder and more refreshing than the surrounding sea. Access is available via both shore and boat. Divers should be aware of potential hazards including boat traffic, cold water, and the overhead environment.

The Rossarol 1 is a wreck site featuring the remains of an Italian destroyer built in 1913. The vessel struck a mine in 1918, which split the ship into two sections. Divers can explore the larger fore part, which lies capsized and oriented towards the north. The wreck sits at depths ranging from 40 to 50 metres, with an average depth of 47 metres. This site is accessible only by boat and is situated 2160 metres from the shore. Due to the depth, potential for entanglement, moderate currents, and variable visibility between 3 and 15 metres, this dive is strictly for advanced divers.

Travnica, located off the island of Cres, offers a diverse underwater profile ranging from 3 to 40 metres. The site features a combination of reef, wall, and cave formations, providing varied terrain for intermediate divers. Visibility typically ranges between 15 and 30 metres, with mild currents that facilitate exploration of the wall and cave sections. Divers can access the site from both the shore and by boat. Due to the presence of an overhead environment within the cave system and regular boat traffic in the area, careful planning of buoyancy and gas management is required. Always maintain awareness of surface activity when ascending.