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The coastline of American Samoa National Marine Sanctuary
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The Reefs of American Samoa: A Story of Hope

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

Bringing Back Tampa Bay’s Seagrass

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Limpets leave a zigzag trail on rocks as they move along scraping off algae and seaweed with their strong teeth.
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Limpet Teeth Marks

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A wildlife biologist surveys oiled algae
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Oil Slick in the Gulf

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a frond of red algae
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Fronds of Nori

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a leafy bunch of red algae on a rock
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Irish Moss

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A coral head in the Mesoamerican Reef has both bleached and living coral. The white sections are bleached and the brown parts still contain zooxanthellae, the symbiotic algae that provide food to their coral hosts.
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Bleached Coral On Mesoamerican Reef

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Nutrient influxes can cause phytoplankton blooms in the Antarctic.
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Phytoplankton Bloom in the Antarctic

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green and red pom poms adorn a decorator crab
Article

Happy Crabby Holidays

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red fronds of kelp in low tide
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Palmaria Fronds

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The small larvae of elkhorn coral (Acropora palmata) settle and grow on the crustose coralline algae species Hydrolithon boergesenii.
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Coral Larvae Settling

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A Coral Reef Watch satellite monitors the temperature of the world’s oceans.
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Coral Reef Watch Satellite

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