Upvote:3
According to this site indeed scuba diving in Turkey is heavily regulated. There's an organisation called TSSF which defines rules and regulations for scuba diving. According to the linked site, the limit for > 18yo CMAS 2* and above is indeed 30m:
Here a short summary of what is of interest for everybody.
- Foreigners are not allowed to dive in Turkey without a licensed Turkish Guide Diver.
- Maximum depth limit for OWD/CMAS* - 18m and they have to be accompanied by a Divemaster/CMAS*** in minimum.
- Maximum depth limit for AOWD/CMAS** and higher β 30m. If they are below 18 years their maximum depth is 24m and only if they are accompanied by a Divemaster/CMAS*** in minimum.
- Scuba Diving is not allowed for minors below the age of 14.