Ayvalık Diving Guide 2026: Red Coral, Reefs & Depth Levels

Choose Gavur Limanı or another suitable shallow-to-moderate profile when the goal is introductory or developing recreational diving. Choose Deli Mehmet only when the exact planned depth, certification, recent experience and conditions match—its published site ranges extend far beyond normal beginner diving.

Official tourism sources describe Ayvalık as a major northern-Aegean diving region with 22 islands, many dive sites and extensive red-coral areas. The region offers real progression, but “Ayvalık is suitable for beginners” must never be applied to every site and depth.

Quick site comparison

Site / family	Officially published depth context	Potential fit	Main constraint
Gavur Limanı, İlyosta	Approximately 3–35 m	Different profiles for inexperienced and experienced divers	The centre must define the actual route and maximum depth
İlyosta Island sites	Varies by route	Marine-life and underwater-photography focus	Boat plan, depth, current and exact site name
Deli Mehmet 1	Approximately 18–70 m	Official source describes it as favoured by intermediate divers, but only within an appropriate profile	Wide depth range; the deeper site cannot be inferred from the regional label
Deli Mehmet 2	Approximately 27–70 m	Official source describes it as preferred by professional divers	Deep or technical planning, gases, team and emergency support
Other island reefs and walls	Site-specific	Multi-day certified diving and photography	Season, thermocline, exposure protection and current

Published regional depth ranges do not define the profile a recreational group will actually dive. Obtain the planned maximum depth and route in writing.

Why Ayvalık is a multi-day diving destination

• Many islands and site families allow alternatives when wind or conditions change.
• Reef, wall and coral photography support repeated dive days.
• Shallower and deeper profiles can serve different certified groups.
• The northern-Aegean setting offers a different environment from Kaş and Fethiye.
• A single discovery product does not represent the full regional value.

Discovery dive and first certification steps

A first-time participant should be taken to a controlled introductory site selected by the centre—not to a famous red-coral or deep-site name.

• Direct instructor supervision
• Medical screening and clear stop procedure
• Equipment fitting and equalisation briefing
• Protected entry, exit and limited depth
• Explanation of what the discovery product does and does not qualify
• Alternative plan when wind, visibility or participant comfort changes

Gavur Limanı: broad depth does not mean one profile

GoTürkiye describes Gavur Limanı at İlyosta as extending from about 3 to 35 m and suitable for both inexperienced and experienced divers. The correct interpretation is that the site supports different routes—not that every diver should descend through the whole range.

• Ask for the exact shallow or deeper route.
• Confirm wall positioning and maximum planned depth.
• Check current, visibility and boat pickup.
• Use a guide-to-diver ratio suitable for mixed experience.
• Carry a light only when the guide explains why it is useful; official material notes small marine life in crevices.
• Maintain buoyancy around reef and coral growth.

Deli Mehmet 1

The official Aegean diving page gives Deli Mehmet 1 a depth range of approximately 18–70 m and says it is favoured by intermediate divers. That description must be read carefully: an intermediate recreational profile and the site’s deepest zone are not the same plan.

• What maximum depth will this group actually reach?
• What certification and recent comparable dives are required?
• Is the route a reef top, wall, coral zone or deep technical profile?
• What gas and no-decompression plan applies?
• What current and ascent procedure applies?
• What shallower alternative is available?

Deli Mehmet 2

Official tourism material describes Deli Mehmet 2 at approximately 27–70 m and as preferred by professional divers, with coral reefs referenced from about 27 to 50 m. This is not a normal introductory or generic recreational recommendation.

• Appropriate deep or technical training for the planned profile
• Recent experience at comparable depth and conditions
• Suitable gases, redundancy and decompression plan
• Qualified team, guide and surface support
• Emergency oxygen, evacuation and chamber plan
• No attempt to qualify through confidence or a generic advanced card alone

Red coral and photography

Ayvalık’s red-coral reputation is a major attraction, but coral depth and site access vary. Photography adds task load and can cause uncontrolled contact when buoyancy is weak.

• Practise stable buoyancy before carrying a camera.
• Do not rest, hold or place equipment on coral.
• Use a private or small-group guide when photography is the main goal.
• Ask whether strobes, focus lights and large rigs fit the boat setup.
• Confirm whether the planned route actually includes coral at the diver’s permitted depth.
• Never collect coral, shell or marine material.

Water temperature and exposure protection

Ayvalık’s northern-Aegean water and thermocline can feel different from Mediterranean holiday destinations. Ask for expected water temperature at the planned depth and for the exact season.

• Wetsuit thickness and correct sizing
• Hood and glove availability where allowed
• Surface wind and post-dive exposure
• Thermocline and deeper-water temperature
• Two-dive-day warmth between dives
• Rental drysuit only for properly trained divers under the centre’s rules

Boat-day structure

Question	Why it matters
One or two dives?	Determines gas, food, surface interval and total day length
Which harbour?	Changes hotel transport and morning reporting time
How are sites selected?	Wind and group capability may change the plan
Mixed discovery and certified boat?	Can affect timing, route and guide allocation
Photography setup?	Requires secure storage and careful entry/exit
Non-diving companion?	Boat space, swimming and pricing may differ

Ayvalık vs Kaş

Factor	Ayvalık	Kaş
Regional character	Northern-Aegean islands, reefs, walls and red coral	Mediterranean clarity, canyons, walls and multiple wreck-style sites
Advanced appeal	Deli Mehmet depth and coral profiles	Deep aircraft, wreck and canyon options
Beginner product	Site-specific introductory areas	Established discovery and course market
Temperature	Potentially cooler with stronger thermocline needs	Generally warmer Mediterranean context, still site and season dependent
Trip style	Island-town and northern-Aegean dive weekend	Dedicated dive holiday combined with Kaş–Kekova activities

Verify the centre and guide

• Get the full operating-centre name.
• Check the TSSF-authorised centre and professional through e-Devlet.
• Confirm the boat and assigned guide.
• Provide certification and recent-log information.
• Complete the medical questionnaire honestly.
• Request written insurance, emergency and cancellation terms.

Questions to send before booking

1. Which exact island and site are planned?
2. What maximum depth and profile will my group use?
3. Is this discovery, refresher, recreational, deep or technical diving?
4. What certification and recent experience are required?
5. Will the route include red coral at my permitted depth?
6. What current, visibility, thermocline and water temperature are expected?
7. What equipment, computer, gas, boat, food, insurance and media are included?
8. What guide ratio applies to photographers or mixed experience?
9. What alternative site is used when wind or capability changes the plan?
10. What emergency and evacuation plan applies?

Decision

• Choose a shallow-to-moderate İlyosta/Gavur profile: developing recreational skills and photography under the right plan.
• Choose Deli Mehmet 1: only after the centre matches the exact route and depth to the diver.
• Choose Deli Mehmet 2: only through an appropriately trained, equipped and supported advanced or technical plan.

Sources and data note

• GoTürkiye — Ayvalık diving sites and depth context
• GoTürkiye — Ayvalık regional diving context
• GoTürkiye — Türkiye scuba destinations
• TSSF verification services

Core content review: July 2026. Verify the authorised centre, guide, actual site, planned depth, current, temperature, equipment, medical requirements and written terms for the exact date.