Official Alonissos municipality diving page; supports marine-park restrictions and the need for experienced professional support.
Mourtias Reef
Alonissos reef and wall dive with marine life
Make this a real next stop
Save it, log a dive, or explore nearby on the map.
Save it to come back later
Local operator required
Use a local Alonissos dive center; site selection changes with weather and request.
About Mourtias Reef
Mourtias Reef is an Alonissos marine-park reef-and-wall dive with a shallow reef top, a bigger wall edge, and a calm operator-led rhythm. The route changes with weather, but the site’s best version is a slow, buoyancy-conscious reef dive with sea grass on the return and plenty of small-life detail along the wall and top of the stone reef.
Research Estimate At Mourtias Reef
Conservative baseline from public research. No community dives logged yet.
Where Is Mourtias Reef?
Mourtias Reef Planning Details
Depth range, seasonality, and planning context.
Reported Depth
10m - 35m
Depth Note
The north side starts around a 10m drop-off into the low-30s; the south side follows a larger wall into the mid-30s.
Best Season
Year-round, with weather windows driving day-to-day choice.
Typical Conditions
Protected marine-park reef and wall with a seagrass return, good visibility windows, and daily site selection based on weather.
Safety & Access At Mourtias Reef
Hazards, restrictions, and access requirements.
Key Hazards
Safety Notes
Stay buoyancy-conscious on the wall and pay attention to return-route timing, because the reef can feel more active when weather shifts.
Access Restrictions
Dives are scheduled day by day with weather and operator briefing; follow marine-park and operator rules for the day.
Legal Notes
Respect National Marine Park restrictions and local operator guidance; use only permitted dive areas and approved support.
Local Intel For Mourtias Reef
Community notes to help plan your visit.
Scuba Diving
A good fit for relaxed recreational scuba and buoyancy practice. Open Water divers can usually enjoy it when conditions are calm and the operator is selecting the easier side.
Freediving
Possible only as a conservative calm-day option and only with operator approval; the wall profile makes scuba the primary use case.
Snorkeling
Snorkeling may be fine in the shallow bay edge on very calm days, but the site is mainly planned as a scuba dive.
Mourtias Reef Dive Conditions Planner
Use the planner to scan this week, inspect today in local time, and understand how exposure shapes conditions at Mourtias Reef.
Exposure Profile at Mourtias Reef
Directional shelter context for incoming swell.
Recent Logged Visits At Mourtias Reef
Community dive logs and visit reports for this site.
No Dive Logs Yet
Be the first to log a dive at this spot and share your experience!
Dive Spot Log Averages At Mourtias Reef
Average conditions based on logged dives & visits.
Mourtias Reef Guide - Frequently Asked Questions
Planning answers for access, conditions, timing, and site logistics.
Mourtias Reef Guide - Sources and Updates
Last Updated
Research Sources
Operator page for the north side of Mourtias Reef; supports the reef profile, boat-managed site selection, visibility, and Open Water-friendly route.
Independent dive activity page for Alonissos; supports the stone-reef drop-off and Open Water-friendly depth profile.
Know this site? Improve Spot Details.