Blue Caves in Zakynthos, Greece, features a series of natural arches and grottoes located 10 metres from the shore. This site is accessible by boat and offers depths ranging from 1 to 40 metres, with an average depth of 18 metres. Divers and snorkellers can explore the interior of the caves, where light reflections create distinct blue water conditions. Visibility typically ranges between 15 and 30 metres. Conditions include moderate currents and water temperatures between 15C and 21C, which may decrease near cave entrances. Due to boat traffic, this site is best suited for intermediate divers. Guided tours and air fills are available locally.

Filippoi Beach is a quiet, unorganised cove located on the northwestern coast of Zakynthos, Greece, defined by high surrounding cliffs. The site features a combination of reef and cave topography, with several small caves accessible by swimming directly from the shore. Snorkellers can expect visibility ranging between 20 and 30 metres. The environment supports a variety of Mediterranean reef fish and invertebrates typical of the region. Water temperatures fluctuate significantly throughout the year, ranging from 16C in the cooler months to 27C in August. Due to the presence of sharp coral and potential surf, this site is best suited for intermediate snorkellers.

Porto Limnionas is a narrow, rocky inlet on the western coast of Zakynthos. The site features a varied topography of walls, overhangs, small caves, and boulder-strewn seabeds. Depths range from 2 to 15 metres, with visibility typically between 10 and 25 metres. Snorkellers should be aware of freshwater springs within the caves, which create distinct layers of water with varying salinity and temperature. Entry is from the shore, and the site is suited for intermediate snorkellers due to the overhead environment and depth. Be mindful of boat traffic in the area. Facilities including parking, toilets, changing rooms, and a cafe are available nearby.

Porto Roxa is a rugged rocky cove on Zakynthos, Greece, offering a mix of reef, artificial reef, and cave topography. The site features a steep, rocky seabed with depths starting at 15 metres. Entry is via the shore, where a diving platform is available. Conditions are variable with mild currents and visibility ranging from 10 to 25 metres. Water temperatures fluctuate between 16C and 27C, with colder waters present. Divers and snorkellers should be aware of surf and boat traffic in the area. Species recorded around this area include Indian Lionfish, Turkish Wrasse, European Parrotfish, and various bream species, alongside tube worms and snails.

HMS Perseus is a British submarine from World War II resting on the seabed off Kefalonia. This technical dive site sits at depths between 48 and 52 metres, requiring trimix certification and rigorous gas management. Access is by boat only, located 1600 metres from the shore. Visibility typically ranges from 10 to 30 metres, allowing for observation of the hull structure. While currents are generally mild, they can strengthen without warning. Due to the depth and potential for entanglement, this site is strictly for experienced divers with overhead environment training. Divers must coordinate with boat operators experienced in technical wreck diving to ensure safety.

Korakonissi in Zakynthos is defined by a dramatic natural rock arch and an islet connected to the mainland. The site features a combination of reefs, vertical walls, and caves, with depths ranging from 8 to 24 metres and an average of 12 metres. Access is via the shore, though divers and snorkellers should be aware of potential surf conditions. Visibility typically ranges between 20 and 30 metres. The site is suited for advanced divers due to the topography and conditions, while the deep pools offer a high-quality experience for snorkellers. A cafe is available nearby for post-dive refreshments.

Cameo Island is a rocky site located 100 metres off the coast of Zakynthos, Greece. This reef and artificial reef site is suitable for beginners, offering a shallow average depth of 3 metres with a range of 2 to 4 metres. Snorkellers can access the water directly from the shore. Conditions are generally mild with visibility ranging between 15 and 25 metres. Water temperatures fluctuate throughout the year, reaching a high of 27C in August and a low of 16C in February and March. Facilities available at the location include a cafe, showers, and parking. Hazards to be aware of include jellyfish and sea urchins.

Marathia Arch in Zakynthos, Greece, is a marine site featuring a combination of reef, cave, and cavern topography. Suitable for beginner divers, the site offers depths ranging from 7 to 40 metres. Access is strictly by boat. Visibility at the site typically varies between 10 and 30 metres, with mild currents that can fluctuate. Water temperatures range from 15C to 21C throughout the year. Divers should be aware of potential hazards, including jellyfish and sharp coral. Due to variable conditions, it is recommended to consult with a local boat operator or dive centre regarding current status before planning a dive.