Kelvin waves are difficult to see with the naked eye as they are large in scale, slow moving and don't break onshore like typical ocean waves. In this graphic, satellite radar altimetry measurements ...

Aerial view of Pensacola, Florida collected by NOAA aircraft on October 11, 2026. The National Geodetic Survey (NGS) is collecting aerial damage assessment images of coastal areas in the aftermath of ...

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

Hurricane Laura rapidly strengthened on August 26 in the Gulf of Mexico. By the time Laura reached southwest Louisiana early on August 27, maximum sustained winds reached 150 mph. This part of the ...

Fascinating, elegant, and mysterious to watch in the water, take a jellyfish out of the water, and it becomes a much less fascinating blob. This is because jellyfish are about 95 percent water.

Whether you’re dealing with humans or horseshoe crabs, it’s important to mind your manners. Being respectful of ocean life is vital to protecting endangered species, federally-protected species, and ...

Soundings, or water depth measurements, are represented by numbers on nautical charts. Water depths are measured by soundings usually acquired by hydrographic surveys. The depths may be in either feet ...

Sea ice is frozen water that forms, expands, and melts in the ocean. It is different from icebergs, glaciers, ice sheets, and ice shelves, which originate on land. For the most part, sea ice expands ...

New Jersey and South Carolina currently forbid any harvesting of horseshoe crabs, and Delaware restricts harvesting to males only. Despite their common name, horseshoe crabs are not really crabs ...

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 ...