New cooperative agreements will enable U.S. IOOS regional associations to operate regional coastal observing systems throughout U.S. waters.

The term "bathymetry" originally referred to the ocean's depth relative to sea level, although it has come to mean “submarine topography,” or the depths and shapes of underwater terrain. In the same ...

The Castillo de San Marcos National Monument in St. Augustine, Florida, stands sentinel over Matanzas Bay. The coquina structure remains sturdy after three centuries. The natural coquina outcroppings ...

Scientists have suspected for a while that Greenland sharks lived extremely long lives, but they didn’t have a way to determine how long. The age of other shark species can be estimated by counting ...

The saltiness of the ocean is the result of several natural influences and processes; water from rivers entering the ocean is just one of these factors. Braided river delta at low tide Lower Cook ...

Stony corals exhibit a wide range of shapes. Click on the images below to view a larger image and a description of these corals.

Watch sea turtle hatchlings journey to the ocean during the 2013 nesting season in Dry Tortugas National Park, Florida. This video was captured by a National Park Service professional. Please stay ...

Cigarette butts continue to rank among the most common types of marine debris found. The Ocean Conservancy’s 2018 International Coastal Cleanup Report stated that 2,412,151 cigarette butts were ...

Satellite photograph of the Great Barrier Reef situated off the northeastern coast of Australia. Stretching for 1,429 miles over an area of approximately 133,000 square miles , the Great Barrier Reef ...

Water temperature and pressure determine how far sound travels in the ocean. While sound moves at a much faster speed in the water than in air, the distance that sound waves travel is primarily ...

Learn more about the ocean and the creatures that live there with this feed. Ocean Currents is hosted by Cordell Bank National Marine Sanctuary on KWMR, community radio for West Marin in Northern ...

Though home to almost 40% of the U.S. population, coastal areas account for less than 10% of the total land in the contiguous United States. In the U.S., 127 million people live in coastal counties.