Bleaching colony of blushing star coral, Stephanocoenia intersepta/michelinii. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue.
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Bleaching colony of blushing star coral, Stephanocoenia intersepta
Bleaching colony of blushing star coral, Stephanocoenia intersepta/michelinii. When corals are stressed, the symbiosis between the coral animal and its photosynthetic algal symbionts (zooxanthellae) breaks down and the zooxanthellae are expelled from the coral tissue.
Bleaching colony of blushing star coral
Bleaching colony of blushing star coral, Stephanocoenia intersepta/michelinii.
Bleaching colony of blushing star coral, Stephanocoenia intersepta/michelinii.
Brain coral with black-band disease
A colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease (BBD), Florida Keys.
A colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease (BBD), Florida Keys.
Star coral, Montastraea faveolata, affected by black-band disease
A colony of mountainous star coral, Montastraea faveolata, affected by black-band disease (BBD), Florida Keys.
A colony of mountainous star coral, Montastraea faveolata, affected by black-band disease (BBD), Florida Keys.
Star coral, Dichocoenia stokesii, affected by black-band disease
A colony of elliptical star coral, Dichocoenia stokesii, affected by black-band disease (BBD), Florida Keys.
A colony of elliptical star coral, Dichocoenia stokesii, affected by black-band disease (BBD), Florida Keys.
Colony brain coral, Diploria clivosa, affected by black-band disease
A colony of knobby brain coral, Diploria clivosa, affected by black-band disease (BBD), Florida Keys.
A colony of knobby brain coral, Diploria clivosa, affected by black-band disease (BBD), Florida Keys.
Star coral, Montastraea cavernosa, and black-band disease
Close-up of the interface between bleached polyps of the great star coral, Montastraea cavernosa, and black-band disease (BBD), Florida Keys. The dead coral skeleton behind the black band has become overgrown with green algae.
Close-up of the interface between bleached polyps of the great star coral, Montastraea cavernosa, and black-band disease (BBD), Florida Keys. The dead coral skeleton behind the black band has become overgrown with green algae.
Colony of Colpophyllia breviserialis affected by black-band disease
A colony of Colpophyllia breviserialis affected by black-band disease (BBD), Florida Keys.
A colony of Colpophyllia breviserialis affected by black-band disease (BBD), Florida Keys.
Star coral, Montastraea faveolata, and black-band disease
Close-up of the interface between polyps of the mountainous star coral, Montastraea faveolata, and black-band disease (BBD), Florida Keys. Behind the black band is white coral skeleton remaining after the polyps have died.
Close-up of the interface between polyps of the mountainous star coral, Montastraea faveolata, and black-band disease (BBD), Florida Keys. Behind the black band is white coral skeleton remaining after the polyps have died.
Symmetrical brain coral affected by black-band disease
A colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease (BBD), Florida Keys.
A colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease (BBD), Florida Keys.
Lobed star coral affected by black-band disease
A colony of lobed star coral, Montastraea annularis, affected by black-band disease (BBD), Florida Keys.
A colony of lobed star coral, Montastraea annularis, affected by black-band disease (BBD), Florida Keys.
Grooved brain coral affected by black-band disease
A colony of grooved brain coral, Diploria labyrinthiformis, affected by black-band disease (BBD), Florida Keys.
A colony of grooved brain coral, Diploria labyrinthiformis, affected by black-band disease (BBD), Florida Keys.
Brain coral, Diploria strigosa, affected by black-band disease
A colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease (BBD), Florida Keys.
A colony of symmetrical brain coral, Diploria strigosa, affected by black-band disease (BBD), Florida Keys.
Star coral, Montastraea faveolata, affected by black-band disease
A colony of mountainous star coral, Montastraea faveolata, affected by black-band disease (BBD), Florida Keys.
A colony of mountainous star coral, Montastraea faveolata, affected by black-band disease (BBD), Florida Keys.
Brain coral, Diploria clivosa, affected by black-band disease
A colony of knobby brain coral, Diploria clivosa, affected by black-band disease (BBD), Florida Keys.
A colony of knobby brain coral, Diploria clivosa, affected by black-band disease (BBD), Florida Keys.
Coral, Orbicella annularis, in the Florida Keys
Scientists at the USGS St. Petersburg Coastal and Marine Science Center study coral reef ecosystems. This coral, Orbicella annularis, was photographed in the Florida Keys during field work on coral disease.
Scientists at the USGS St. Petersburg Coastal and Marine Science Center study coral reef ecosystems. This coral, Orbicella annularis, was photographed in the Florida Keys during field work on coral disease.
Photo of researchers starting to take subcores from the giant box core
Photo of researchers starting to take subcores from the giant box core
Photo of researchers starting to take subcores from the giant box core
Photo of subcore tubes inserted into mud before they are removed
Photo of subcore tubes inserted into mud before they are removed.
Photo of subcore tubes inserted into mud before they are removed.
Photo of researchers with giant box core on the deck of the ship
Photo of researchers positioning giant box core in hoist on deck of the research vessel
Photo of researchers positioning giant box core in hoist on deck of the research vessel
Photo of researchers opening hoist on deck, showing giant box core
Photo of researchers opening hoist, showing giant box core, on deck of the research vessel
Photo of researchers opening hoist, showing giant box core, on deck of the research vessel
Photo of researchers looking at mud in the giant box core
Photo of researchers looking at mud in the giant box core before beginning to take subcores
Photo of researchers looking at mud in the giant box core before beginning to take subcores