These courses offer you the opportunity to learn more about the endangered coral reefs and their inhabitants in the Red Sea. Human interactions, lack of education and bad diving practices are a direct threat do the marine environment and as a diver you can learn to make a small difference.

Laura is a marine biologist, Reef Check Trainer and works for a marine conservation NGO. She will explore the underwater world with you, whether you want to get your REEF CHECK ECODIVER certification, want to learn just a little bit more with the different REEF BIO Modules or want to help Red Sea turtle monitoring with TURTLE WATCH.

Try the ECO-DIVING ADVENTURE with H2O and you will change your perspective on diving and the underwater world.

Reef Check Indicator: Green turtle/remora
Reef Check Indicator : Crown of Thorns
Reef Check Indicator: Butterflyfish

For more details on Reef & Marine Biology please:


The Reef Check Eco Diver course is designed to teach you everything you need to know to conduct full scale Reef Check surveys.

In this program you'll learn about the globally standardized Reef Check methodology as well as how to identify key indicator fish, invertebrates and substrates selected by Reef Check for global monitoring and coral reef conservation. The course is very in-depth and will leave you never looking at the reefs in the same way. The Eco Dive course will allow you to join Reef Check monitoring teams and assist in underwater surveys around the world.

The EcoDiver Course lasts 4 to 5 days and is accessible for Advanced Open Water with a minimum of 25 dives. It includes the EcoDiver kit, theory presentations, in-water diving training, practice of methodology and identification skills, Reef-check survey, dive against debris and EcoDiver certification (Red Sea/ Indo-Pacific).

This course will give you the opportunity to survey and explore the great variety of coral reefs, collect standardised scientific data, perceive human impacts on marine ecosystems and raise global awareness about reefs’ conditions worldwide!

Recording substrate data, Reef Check survey
Fish identification practice

Empowering people to save our reefs and oceans


The Reef Bio Modules are short courses designed to supplement the EcoDiver course.

They can also be taught independently to any diver (non diver possible) interested in learning more about marine creatures and what they can see underwater. You can’t see what you don't know!

Course Outline:

½ day courses include 1 dive, 1 day courses include 2 dives. All the courses include 1 or 2 classroom presentation to introduce the topic of the dive(s).

Reefs in Depths

1 day Hard coral, soft coral, etc. Not a clue? Let us show you the small world of coral polyps, their colours, how they grow and the amazing things they can do! Learn about all the creatures they shelter and the Coral Watch methodology for coral bleaching monitoring.

Seagrass introduction

1 day What lives in Seagrass? Why is it so important to coral reefs and coastlines? Identify seagrass species and organisms that live, feed and find shelter in seagrass ecosystems.

Reef relationships

1/2 day Learn everything about interactions and communication between reef organisms: symbiosis, mutualism, parasitism in reef inhabitants and what do they gain from these strange relationships.

Night biology

1/2 day One Night dive to explore nocturnal reef creatures’ behaviour and to explain how so many organisms can share the same habitat

Mimicry & camouflage

1/2 day Not to be seen, predator and prey tricks to survive in the ocean, or how to mimic a dangerous organism when you are harmless.

Reef Fish families

1/2 day How to distinguish the most common reef fish families, their importance to reefs, fun facts, who preys on what and much more.

Marine creatures

1 day Learn about the different groups of species that you can find in oceans, their evolution, how they are related, where they live and how you can recognise them easily.

Wildlife Photographer

1 day Learn about photography/improve your skills underwater! Can be coupled with the PADI Digital Underwater Photography.

Dive Against Debris included

included/free 1 dive to help collect underwater trash and feed Project Aware’s database on this worldwide growing problematic.

Reef Check substrate: Hard coral
Reef Check indicator: moray eel
Dwarf scorpionfish
Reef Check indicator:Banded coral shrimp
Reef Check substrate: soft coral
Indian seahare in a plastic bottle
Project Aware Dive against debris



For the Reef Check Eco Diver course a minimum of two participants is required. For the Reef Bio Modules, no minimum number of participants is required.


All Reef Check courses and Reef Bio modules can be scheduled at group’s/individual’s best convenience. It is not an obligation to pre-book Reef Bio courses. Fixed programme dates are available on our website or on demand.


English and French available for all courses. Ask for our Offers and group deals! Contact H2O Divers Dahab for more information and bookings.