Bleaching colony of great star coral, Montastraea cavernosa, with polyps extended, Florida Keys. 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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Images from the Southeast Region.
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Bleaching colony of great star coral, Montastraea cavernosa
Bleaching colony of great star coral, Montastraea cavernosa, with polyps extended, Florida Keys. 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 colonies of mountainous star coral, Montastraea faveolata
Bleaching colonies of mountainous star coral, Montastraea faveolata, Florida Keys. 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 colonies of mountainous star coral, Montastraea faveolata, Florida Keys. 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 colonies of mustard hill coral, Porites astreoides
Bleaching colonies of mustard hill coral, Porites astreoides, both green and brown color morphs, Florida Keys. 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 colonies of mustard hill coral, Porites astreoides, both green and brown color morphs, Florida Keys. 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 mustard hill coral, Porites astreoides
Bleaching colony of mustard hill coral, Porites astreoides, Florida Keys. 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 mustard hill coral, Porites astreoides, Florida Keys. 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 massive starlet coral, Siderastrea siderea
Bleaching colony of massive starlet coral, Siderastrea siderea, Florida Keys. 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 massive starlet coral, Siderastrea siderea, Florida Keys. 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 massive starlet coral, Siderastrea siderea
Bleaching colony of massive starlet coral, Siderastrea siderea, Florida Keys. 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 massive starlet coral, Siderastrea siderea, Florida Keys. 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, 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, 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.
Bleaching colony of symmetrical brain coral, Diploria strigosa
Bleaching colony of symmetrical brain coral, Diploria strigosa, Florida Keys. 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 symmetrical brain coral, Diploria strigosa, Florida Keys. 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.
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.
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.
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.
Cedar Creek in Congaree National Park, South Carolina
Cedar Creek in Congaree National Park, SC, showing old growth bottomland hardwood forest
Cedar Creek in Congaree National Park, SC, showing old growth bottomland hardwood forest