NOAA Coral Reef Watch coordinator. Photo: Shutterstock When corals bleach, they expel zooxanthellae, the microscopic, single-celled algae in their tissues. Normally, as these algae photosynthesize ...

April 23 (UPI) --More than 80% of the world's coral reefs fell victim to harmful bleaching and is now ... will expel the algae -- otherwise known as zooxanthellae -- living in their tissues ...

Harmful bleaching of the world’s coral has grown to include 84% of the ocean’s reefs in the most intense event of its kind in recorded history, the International Coral Reef Initiative ...

Harmful bleaching of the world's coral has grown to include 84% of the ocean's reefs in the most intense event of its kind in recorded history, the International Coral Reef Initiative announced ...

An unprecedented coral bleaching crisis is gripping the planet ... temperatures cause corals to expel symbiotic algae known as zooxanthellae, which provide them with essential nutrients and ...

Coral bleaching is a natural response of corals to environmental stress, where corals expel the microscopic algae called zooxanthellae. These algae provide most of the coral’s food and vibrant ...

When water is too warm, coral will expel the algae -- otherwise known as zooxanthellae -- living in their tissues which causes the coral to turn completely white, according to the National Oceanic and ...

Since April last year, around 60% to 80% of coral in Thailand's seas were found to have suffered bleaching ... leading to them expelling zooxanthellae algae. When this algae is lost, coral ...

A recent survey of 21 sites across the Ningaloo Reef suggests a coral death rate between 1 to 5 per cent. Bleaching old-growth ... Without the algae, known as zooxanthellae, the coral loses ...