Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Pacific Coastal and Marine Science Center images.
Maps of spatial patterns of live coral cover and change by site at Puʻukoholā Heiau National Historic Site. A) Mean baseline survey of percentage of live coral cover. B) Mean resurvey of percentage of live coral. C) Percent change of live coral cover between the baseline and resurvey.
Maps of spatial patterns of live coral cover and change by site at Puʻukoholā Heiau National Historic Site. A) Mean baseline survey of percentage of live coral cover. B) Mean resurvey of percentage of live coral. C) Percent change of live coral cover between the baseline and resurvey.
Aerial image of Bahia de Guanica in Puerto Rico.
Aerial image of Bahia de Guanica in Puerto Rico.
Box core sample containing polymetallic nodules from American Samoa, 2026, from the American Samoa Mapping Project.
Box core sample containing polymetallic nodules from American Samoa, 2026, from the American Samoa Mapping Project.
Map depicting Valle De Lajas and Río Loco drainage, the westernmost zone of the study area. Pie charts summarizing Sr isotope mixing model results. River sediment sample locations are represented by an X, bedrock sampling locations by open circles. An infilled black rectangle shows Bahía de Guánica sediment sampling location (NS-01).
Map depicting Valle De Lajas and Río Loco drainage, the westernmost zone of the study area. Pie charts summarizing Sr isotope mixing model results. River sediment sample locations are represented by an X, bedrock sampling locations by open circles. An infilled black rectangle shows Bahía de Guánica sediment sampling location (NS-01).
Polymetallic nodules on the seafloor offshore of American Samoa. From the American Samoa Mapping Project
Polymetallic nodules on the seafloor offshore of American Samoa. From the American Samoa Mapping Project
Map of American Samoa and study area of the American Samoa Mapping Project.
Map of American Samoa and study area of the American Samoa Mapping Project.
Rotating x-ray computed tomography scanner with coral core. Inset photograph shows a coral core (Orbicella spp.) inside an aluminum sleeve together with coral density standards on the top used for calibration.
Rotating x-ray computed tomography scanner with coral core. Inset photograph shows a coral core (Orbicella spp.) inside an aluminum sleeve together with coral density standards on the top used for calibration.
Seasonal teleconnections between ENSO and shoreline positions, waves, and water levels throughout the PNW.
Seasonal teleconnections between ENSO and shoreline positions, waves, and water levels throughout the PNW.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.
USGS scientists collect core samples from estuaries, lakes, coasts, and marine environments to study a range of physical and chemical properties preserved in sediments over time. They process and analyze these core samples in the Pacific Coastal and Marine Science Center’s Core Labs.