Red Sea coral reefs
Coral reef ecosystems along the Red Sea’s coasts and islands, known for high coral diversity and resilience to unusually warm, saline waters.
Coral–algal symbiosis: A mutualistic association in which coral animals host photosynthetic algae that supply much of their energy. This partnership powers reef-building corals in the Red Sea’s clear, sunlit waters.
Gulf of Aqaba: A narrow northern extension of the Red Sea bordered by Egypt, Israel, Jordan, and Saudi Arabia. Its reefs are known for corals that tolerate unusually high temperatures before bleaching.
Red Sea Rift: A divergent plate boundary where the African and Arabian plates are moving apart beneath the Red Sea. Rifting created the basin in which the region’s reefs developed.
Marine protected area: A geographically defined marine zone managed to conserve ecosystems, species, or cultural resources. Protected areas are a central tool for conserving Red Sea reef habitats.
Red Sea marine heatwaves: Periods of unusually high sea temperature in the Red Sea that can stress marine organisms. They test the thermal limits that have helped some regional corals persist.
Coral bleaching: The loss of symbiotic algae or their pigments from coral tissue, often caused by heat stress. It is a major risk as marine heatwaves reach Red Sea reefs.
Farasan Islands: A Saudi Arabian archipelago in the southern Red Sea, with extensive coral reefs and seagrass habitats. These islands anchor some of the region’s largest and most diverse reef systems.
Red Sea: A seawater inlet between northeastern Africa and the Arabian Peninsula, connected to the Indian Ocean and Mediterranean Sea. Its basin sets the reefs’ geography, circulation, and climate.
Coral reef tourism: Travel and recreation centered on coral reefs, including diving, snorkeling, and wildlife viewing. Reefs attract visitors and generate income along several Red Sea coasts.
Coastal development: Construction and land-use change along coastlines, including ports, resorts, and urban infrastructure. Dredging, runoff, and habitat alteration can damage nearby reefs.