Advenway
Advenway
Reef Avşa Island, Marmara, Balıkesir
The colour shows the step on an official scale (sea: WMO code table 3700, wave height; wind: Beaufort scale); it is not a dive decision. This is an open-sea model; sheltered coves are usually calmer.
Sea temperature
17.3°C
Wave height
0.94 m
Wave period 3.7 s
Current
0.9 km/h
SW
Wind
26.1 km/h
NNE
Air temperature
11°C
Feels like
6.2°C
Humidity
71%
Pressure
1026 hPa
Data: Open-Meteo · These are model forecasts; confirm local conditions with the dive center before you dive.
5 nearby centres are authorised for nitrox training. See the list →
Centres with a Nitrox specialty registered with the TSSF (checked October 2026). This is a training authorisation; ask the centre about Nitrox fills and rental.
Nitrox depth calculator (MOD) → Flying after diving: at least 12–18 hours (DAN) →
An island in the south of the Sea of Marmara. Visibility changes between 5 and 15 metres with the season. It is known for its underwater macro life and its unusual rock formations; mackerel, seabream, scorpionfish and crustaceans particular to the Marmara ecosystem are seen here.
Underwater cultural assets are covered by Turkish Law no. 2863. Diving at these sites is done only through authorized dive centers and in line with the published rules.
The TSSF-registered centres closest to this site (within 60 km or in the same province). Distance is a straight line to the centre’s registered address; it does not mean the centre runs dives to this site, so ask the centre. All authorised centres →
40.513516, 27.49503
Open in the full map
Map: © OpenStreetMap contributors
Single source
Based on one source; ask a local dive center before you plan around it.
About the position on the map
The position is at the AVŞA ISLAND level — no coordinate has been published for the individual dive sites here. The pin on the map marks the island, not the exact place of the dive.
See the authorized dive centers and the other dive sites in the same province on one page.
Dive sites and centers in Balıkesir → All dive sites in Turkey →