Images

Shown here is a photograph taken on October 20, 2023, of a wild Elkhorn coral colony in Buck Island Reef National Monument, St. Croix, VI, showing the effects of heat stress caused by elevated ocean temperatures. The heat stress causes “coral bleaching,” or the loss of nutrient-giving microscopic algae that normally live within corals.

Cross-sections of the southern Cascadia margin, showing the subsurface structure of the outer arc high, from the study Diving deeper into seep distribution along the Cascadia Convergent Margin, USA.

Regional overview map of the Cascadia convergent margin with the locations of methane seeps, from the study Diving deeper into seep distribution along the Cascadia Convergent Margin, USA.

Close-up of a coral core collected aboard the Hawaiian Drowned Reefs Expedition in late 2023.

Aboard the Hawaiian Drowned Reefs Expedition, Nancy Prouty examines a coral core collected from a drowned reef terrace.

Photo of offshore infrastructure. Offshore Louisiana, September 2023—photo by L. Brothers.  

Section of a sediment core from Rush Lake, Lower Geyser Basin, Yellowstone National Park.

The USGS and partners prepare to deploy 11 buoys into the Gulf of Maine from a U.S. Navy aircraft in preparation for Hurricane Lee. These buoys measure waves, temperature, and physical ocean properties.

Photo of offshore infrastructure. Offshore Louisiana, September 2023—photo by L. Brothers. 

Offshore wind lease polygons retrieved from the 'Offshore Wind Lease Outlines' feature class available on Marine Cadastre.

Photo of offshore infrastructure. Offshore Louisiana, September 2023—photo by L. Brothers.  

Photo of offshore infrastructure. Offshore Louisiana, September 2023—photo by L. Brothers. 

Bathymetric data in and around lease area OCS-A-0567 that resolves iceberg scours and seafloor mounds.

Cover image for the video Natural Hazards We Might Face, in support of National Preparedness Month.

Science team of the Hawaiian Drowned Reefs Expedition in front of the MMA Valour.

Shown here is a colony of the threatened Elkhorn coral, Acropora palmata, that has succumbed to "bleaching," that is, lost all its algal symbionts (also called zooxanthellae) because of the summer 2023 ocean-heat wave. The coral is attached to a cement block as part of the U.S.

Shown here is a small colony of the threatened Elkhorn coral, Acropora palmata, that has become "bleached," that is, lost all its algal symbionts (also called zooxanthellae) because of the summer 2023 ocean-heat wave. The coral is attached to a cement block as part of the U.S.

Shown here are three SCUBA divers installing shade structures over experimental Elkhorn corals (Acropora palmata) that have become "bleached," that is, lost all their algal symbionts (also called zooxanthellae) because of the summer 2023 ocean-heat wave. The corals are attached to cement blocks as part of the U.S.

Shown here is a colony of the threatened Elkhorn coral, Acropora palmata, that has become "bleached," that is, lost all its algal symbionts (also called zooxanthellae) because of the summer 2023 ocean-heat wave. The coral is attached to a cement block as part of the U.S.

Shown here is a colony of the threatened Elkhorn coral, Acropora palmata, in Dry Tortugas National Park that has become "bleached," that is, lost all its algal symbionts (also called zooxanthellae) because of the summer 2023 ocean-heat wave.

Shown here is a colony of the threatened Elkhorn coral, Acropora palmata, that has become "bleached," that is, lost all its algal symbionts (also called zooxanthellae) because of the summer 2023 ocean-heat wave. The coral is attached to a cement block as part of the U.S.