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The Red Sea

Mapping Saudi Arabia's Red Sea Reefs

The Red Sea

Mapping Saudi Arabia's Red Sea Reefs

ABOUT THE EXPEDITION

Exploring the Red Sea

The Red Sea is home to some of the most biologically rich and least disturbed coral reefs in the world. Between 2006 and 2009, the Khaled bin Sultan Living Oceans Foundation led an ambitious four-year research campaign along the Saudi Arabian Red Sea coastline—our first major Science Without Borders® field effort. Aboard the M/Y Golden Shadow, our team of international scientists conducted extensive surveys in five key regions: the Farasan Islands, Ras Al-Qasabah, Al Wajh, Yanbu, and the Farasan Banks.

In partnership with leading marine science institutions and government agencies, we combined satellite imagery, aircraft sensors, and underwater fieldwork to produce the first high-resolution coral reef habitat and bathymetric maps of this region. This work not only expanded scientific understanding of the Red Sea’s unique reef systems, but also laid the foundation for effective marine management and conservation planning. The results of this work were published in the Atlas of Saudi Arabian Red Sea Marine Habitats, the first-ever comprehensive atlas of the region’s offshore coral reefs.

Research Objectives

Map
Coral Reefs

Create the most detailed and comprehensive map of coral reefs and shallow marine habitats in the Saudi Arabian Red Sea

Assess
Reef Health

Assess the structure, composition, and state of Saudi Arabia’s Red Sea reefs

Support Science-based Management

Share results with government agencies in Saudi Arabia to inform management and conservation decisions

LOCATIONS

Findings

Our research revealed a diverse and dynamic coral reef ecosystem across the Saudi Arabian Red Sea. The highest live coral cover was observed in the Farasan Banks (nearly 30%), while areas like Ras Al-Qasabah had lower coral cover, possibly due to past disturbances such as coral bleaching, disease, or crown-of-thorns starfish outbreaks. Despite signs of degradation in some areas, we found evidence of recovery, including widespread coral recruitment and healthy juvenile colonies.

We also documented rich benthic habitats—including seagrass beds, algal flats, mangroves, and fringing reefs—especially in the northern-central regions like Al Wajh and Yanbu. However, fish surveys revealed that top predators such as sharks and large groupers were rare, suggesting overfishing pressures even in remote areas.

One of the most important outcomes of this research was a groundbreaking resilience model developed using our habitat maps and field data. This model helps identify reef areas with high ecological resilience, which is critical for guiding marine protected area (MPA) design and adaptive management. For example, reefs in the Farasan Banks were found to be among the most resilient in the region, making them strong candidates for conservation focus.

Red Sea Atlas

The Atlas of Saudi Arabian Marine Habitats  contains a comprehensive overview of the Living Ocean Foundation’s maps and findings from our reserach missions to the Saudi Arabian Red Sea. It is the first atlas to map all of the offshore coral reef habitats in the Saudi Arabian Red Sea. It is available for download in both English and Arabic.

Return to the Red Sea

Thirteen years after our original expedition to the Red Sea, the Khaled bin Sultan Living Oceans Foundation returned to the Ras Al-Qasabah region of the northern Saudi Arabian Red Sea. Our Chief Scientist, Dr. Sam Purkis, embarked on this OceanX research mission in 2020 to extend our mapping of the shallow-water reefs into the abyssal depths of the Northern Red Sea.

This work has been facilitated by a six-week joint expedition aboard the inaugural science mission of OceanXplorer, an 87 m research vessel furnished with state-of-the-art tools for seabed mapping, including a pair of custom Triton manned submersibles, each with a diving depth of over 1,000 m, plus a 6,000 m rated remotely operated vehicle (ROV). The unique capacity of OceanXplorer combined with the uncharted deeps of the Northern Red Sea led to new discoveries and revealed the intricacies of reef building offshore.

Request the Use of Our Data

The Living Oceans Foundation provides opportunities for scientists, governments, and conservation organizations to use our data to protect coral reefs and other coastal marine ecosystems. If you are interested in using our data to support your marine conservation initiatives, we invite you to fill out a data request form to access these valuable resources.

Scientific Publications

Dozens of peer-reviewed publications resulted from the extensive scientific research and data analysis conducted during the Foundation’s Red Sea research missions, including our Atlas of Saudi Arabia’s Red Sea Reefs. You can access all of the publications from our research mission below.

Saudi Red Sea Authority Partners with the Khaled bin Sultan Living Oceans Foundation
CORDAP and the Khaled bin Sultan Living Oceans Foundation Partner to Advance Coral Restoration Education
Amphistegina lobifera Foraminifera Are Excellent Bioindicators of Heat Stress on High Latitude Red Sea Reefs
Tsunamigenic Potential of an Incipient Submarine Landslide in the Tiran Straits
Global Reef Expedition Final Report
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Partners

Our Red Sea research missions would not have been possible without the support and involvement of our dedicated ocean science partners. 

Participants

The following scientists worked with the Khaled bin Sultan Living Oceans Foundation to survey and map coral reefs in the Red Sea:

Ameer Abdullah
Omar Al-Khushaim
Ahmed Al-Mansi
Khalid Al-Shaikh
Hatem Al-Yami
Abdullah Alsuhaibany
Hussein bin Hajji
Andrew Bruckner
Raymond Buckley
Martin Callow
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Updates From the Field

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