Eutrophication

How Coastal Seagrass Feeds the Deep

Seagrasses are flowering plants that can form dense underwater meadows and are an important shallow water habitat. Credit: Heather Dine, Florida Keys National Marine Sanctuary It is a well-known fact that for animals living...
The coastline of American Samoa National Marine Sanctuary

The Reefs of American Samoa: A Story of Hope

American Samoa National Marine Sanctuary comprises a fringing coral reef ecosystem nestled within an eroded volcanic crater on the island of Tutuila, American Samoa. Credit: Wendy Cover Sometimes called the rainforests of the sea,...
Nancy Rabalais

Five Questions with Nancy Rabalais, Tracking Dead Zones In the Gulf

The Gulf of Mexico is known for one of the world's largest “dead zones"—areas of low- or no-oxygen water along the seafloor that suffocate most animal life. The average size of the Gulf's dead...
A bloom of moon jellies.

A Bloom of Moon Jellies

In recent years, blooms of jellyfish, such as these moon jellies ( Aurita aurita ) in the Chesapeake Bay, have become more common around the world for a number of different reasons . One...