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Algae has overtaken this coral reef off heavily populated Kiritimati, or Christmas Island.
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Unhealthy Coral Reef, Kiritimi, Line Islands

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Red Algae
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Branching Red Algae

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Harbor seal in a kelp forest near Cortes Bank, near San Diego California.
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Harbor Seal in a Kelp Forest

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How do plants respond to rising CO2 levels? To find out, plant physiologist Bert Drake monitors plants used in his CO2 study at the Smithsonian Environmental Research Center (SERC) near the Chesapeake Bay in Maryland.
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CO2 Marsh Study

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As Dampier studied the plants he encountered in Australia, he wrote that they were “for the most part unlike any I had seen elsewhere.” In fact, nearly all the plants Dampier observed were entirely unknown to botanists at that time.
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More Australian Plants

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Neptune grass (Posidonia oceanica) is a slow-growing and long-lived seagrass native to the Mediterranean.
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Fish Feeding in Seagrass

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A beautiful bromeliad blooms among the mud and roots of a mangrove swamp.
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Dancing Bulb

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A landscape photo of a shoreline with tall grass-like plants lining the water's edge.
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Phragmites australis

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scientist Drew-Baker reads a book by her microscope
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Saving Nori

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Seagrasses are flowering plants that can form dense underwater meadows and are an important shallow water habitat.
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Seagrass and Seagrass Beds

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A brown-colored deep-sea coral sits on the deep ocean floor and is covered with brown oil floc.
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Anemone On Deep Sea Coral

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A close-up photo of Killer Algae, Caulerpa taxifolia, a seaweed that has proven to be a successful invasive species.
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Killer Algae (Caulerpa taxifolia)

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