Bodrum sits on a peninsula at the southwest tip of Turkey's Aegean coast, a former Greek and Carian city (ancient Halicarnassus) now best known as a summer beach-and-marina town. Its roughly 15–20 charted dive sites lie within a 20–40 minute boat ride of the harbour, mostly around Kara Ada (Black Island) and out toward Orak Island, and are dived almost exclusively by day boat from April to early November. Honest framing matters here: the Aegean is a temperate, comparatively nutrient-poor sea that has been fished hard for generations, so divers should not expect coral reefs or dense pelagic action. The fish life is modest (groupers, dentex, sea bream, barracuda schools, moray eels, octopus, scorpionfish and nudibranchs are the staples) and the real appeal is the topography (caves, swim-throughs, steep limestone walls), the clear warm water, the three artificial-reef wrecks, and an unusually strong archaeology story. Three wrecks were deliberately scuttled by the Bodrum Underwater Society (BOSAD) as artificial reefs: the PINAR 1 navy water tanker and the SG115 coast guard patrol boat in 2007, and a retired Turkish Air Force C-47 Dakota aircraft in 2008. The deeper context is the Bodrum Museum of Underwater Archaeology, housed in the 15th-century Castle of St. Peter, which displays finds from the Uluburun (14th century BCE) and Serçe Limanı wrecks, but note that diving on genuine ancient wreck sites is not a recreational activity here: Turkey tightly regulates diving over cultural-heritage zones, diving in military zones is forbidden, foreign divers must be accompanied by a licensed Turkish guide, and touching or removing artefacts is prohibited. Loose amphora fragments lie on the sand at some permitted sites (Orak Island, Smuggler's Cove) and may be looked at but not taken. Conditions are benign: summer surface water reaches 25–27°C with little current at most sites, while winter drops to around 16–17°C and most centres close. Visibility is genuinely good, often 20–30 m. A growing footnote is the arrival of Lessepsian invaders: venomous lionfish (Pterois miles), which entered the Mediterranean via the Suez Canal and were first caught at Bodrum in May 2019, are now an occasional sighting on the wrecks.
