HAB

NOAA and 12 other federal agencies are working to improve research and communications about the risks of harmful algal blooms and hypoxia, twin threats to our nation's waters. Continue Reading

Harmful algal blooms, or HABs, occur when colonies of algae—simple ocean plants that live in the sea—grow out of control while producing toxic or harmful effects on people, fish, shellfish, marine mammals and birds. The human…

Satellite image of Lake Erie showing a mild harmful algal blom in the southwestern portion of the lake. Harmful algal blooms (HABs)…

Communities looking to build resilience to storms—from hurricanes to river flooding—need a lot of information. One of the key things that they need is accurate height information. The National Geodetic Survey (NGS) is undertaking a…

During a beach closure, water conditions are deemed unsafe for swimmers and other users. A beach advisory leaves it up to users as to whether they wish to risk going into the water. Shown here:…

Clam diggers along the Washington state coast. So far this year, the presence of harmful algal bloom toxin in Washington state water's has resulted in fishery closures,…

Crewmembers on the NOAA ship Okeanos Explorer guide a sediment corer back onto deck so they can retrieve core samples. These sediment samples from the ocean…

Ask Us Anything! With harmful algal bloom (HAB) season beginning over the next few months in several areas of the U.S., this is your…

Red Tide Robot The Environmental Sample Processor, shown here prior to deployment, is an underwater robot that can remotely measure…

<!-- Did you know?--> In the Gulf of Mexico, some harmful algal blooms (HABs) are caused by the microscopic algae species Karenia brevis, commonly called red tide. These blooms can produce…

At Swan Island, situated in Chesapeake Bay, high rates of shoreline erosion and subsidence deteriorated the island’s natural habitat and its ability to shelter the nearby town of Ewell, Maryland, from wave…