The Princes' Islands offer boat-accessed diving across a compact spread of reef, drift, wreck and muck sites. Currents run strong at exposed points such as Büyükada Kurşun Burnu, tilting the site mix firmly toward intermediate and advanced divers. The Karakaya Wreck off Heybeliada draws those seeking structural dives, while reef sites like Neandros-Tektas and Kara ev Sedef reward methodical exploration. European Common Cuttlefish, Conger Eel and Scorpionfish are consistently observed, with Sponge and Sea Anemone carpeting much of the reef.
Monthly water temperature across Princes' Islands's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water is coldest through late winter and begins to warm noticeably from late spring onward, peaking in the warmer months when most divers choose to visit. Summer and early autumn bring the most favourable conditions and account for the bulk of diver activity. The shoulder months of late autumn see a gentle drop in temperature, and currents at exposed reef and drift sites remain a factor year-round.
24 operators
Water temperature around Princes' Islands ranges from about 10°C in February to 19°C in October, based on satellite sea-temperature data for its dive sites.
In the warm season (about 19°C) a 5mm suit is comfortable in Princes' Islands; in the coldest months (about 10°C) step up to a drysuit.
Fin maps 12 sites in Princes' Islands (12 scuba diving sites).
Across Princes' Islands's dive sites, May, June, July, August and September are most often reported as the best months to visit.
Observation-backed species include European Common Cuttlefish, Conger Eel, Grey Triggerfish, Scorpionfish, Sea Slug, Boga, Sea Star, Sea Anemone and Sponge. Groupers appear occasionally, and Wrasses and Bream have also been recorded. The European Common Cuttlefish is the signature species across the sites.
Most sites here are rated intermediate or advanced, and several, including Büyükada Kurşun Burnu and Neandros-Tektas, involve strong currents and considerable depth. Beginners would find limited options; the site mix is best suited to divers who are already comfortable managing current and deeper profiles.
The majority of sites are boat-access only, so diving here means going out with an operator. A small number of sites, including Kara ev Sedef and Mudurli, can also be reached from shore. Several operators are based in and around Istanbul and serve the islands.
The region covers reef dives, drift dives, wreck dives and muck diving. The Karakaya Wreck off Heybeliada is the main wreck site, while Mudurli combines reef and muck environments. Drift diving features strongly at exposed headland sites where currents funnel between the islands.
5 more sites to explore
