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.

Topic: Hypoxia

Two scientists aboard a ship hoist a large metal instrument over the waters of the Gulf of Mexico.

NOAA and partners find smaller-than-anticipated hypoxic zone in Gulf of America

August 5, 2026

Focus areas:

Topics:

Gulf of America

nutrient pollution and hypoxia

Two scientists aboard a ship hoist a large metal instrument over the waters of the Gulf of Mexico.

Two people in hardhats on a ship work with a large piece of equipment that contains chambers to sample water from the U.S. Gulf.

Gulf of America ‘dead zone’ below average, scientists find

July 31, 2025

Focus areas:

Topics:

Gulf of America

Two people in hardhats on a ship work with a large piece of equipment that contains chambers to sample water from the U.S. Gulf.

Students collect water samples on board the RV Pelican during the annual Shelfwide Cruise.

NOAA, partners to report on 2025 Gulf of America ‘dead zone’ monitoring cruise

July 23, 2025

Focus areas:

Topics:

Gulf of America

Students collect water samples on board the RV Pelican during the annual Shelfwide Cruise.

A man in an orange hat and yellow life preserver stands in a boat and pulls up a piece of sampling equipment from over the side.

NOAA scientists forecast average summer 'dead zone' for Gulf of America

June 11, 2025

Focus areas:

Topics:

Gulf of America

A man in an orange hat and yellow life preserver stands in a boat and pulls up a piece of sampling equipment from over the side.

Photo showing Dr. Jill Tupitza and doctoral student Allison Noble collect near-bottom water aboard Research Vessel Pelican to obtain oxygen measurements used to determine the size of the Gulf of Mexico hypoxic zone. (LUMCON/LSU, Cassandra Glaspie)

Gulf of Mexico ‘dead zone’ larger than average, scientists find

August 1, 2024

Focus areas:

Topics:

Photo showing Dr. Jill Tupitza and doctoral student Allison Noble collect near-bottom water aboard Research Vessel Pelican to obtain oxygen measurements used to determine the size of the Gulf of Mexico hypoxic zone. (LUMCON/LSU, Cassandra Glaspie)

Aerial view of a harmful algae bloom near the smokestacks of DTE Energy’s Monroe Power Plant in Monroe, Mich., on Lake Erie’s western shore. (Aerial Associates Photography/Zachary Haslick)

Moderate to above-moderate harmful algal bloom predicted for western Lake Erie

June 27, 2024

Focus areas:

Topics:

harmful algal blooms (HABs)

Aerial view of a harmful algae bloom near the smokestacks of DTE Energy’s Monroe Power Plant in Monroe, Mich., on Lake Erie’s western shore. (Aerial Associates Photography/Zachary Haslick)

Dead Dungeness crabs on Kalaloch Beach in Washington on June 14, 2022.

Hypoxic area off Pacific Northwest Coast has grown since 1950s

April 17, 2024

Focus areas:

Topics:

harmful algal blooms (HABs)

ocean acidification

Dead Dungeness crabs on Kalaloch Beach in Washington on June 14, 2022.

A beach on Saint Martin in the Caribbean (east of Puerto Rico) covered in Sargassum seaweed.

NOAA awards over $20 million for harmful algal bloom and hypoxia research, monitoring

October 3, 2023

Focus areas:

Topics:

harmful algal blooms (HABs)

A beach on Saint Martin in the Caribbean (east of Puerto Rico) covered in Sargassum seaweed.

An aerial drone photo of the Mississippi River near Vicksburg, MS, looking Northeast at the I-20 bridge, the confluence of the Yazoo River is in the foreground.

NOAA forecasts summer 'dead zone' of nearly 5.4K square miles in Gulf of Mexico

June 2, 2022

Focus areas:

Topics:

An aerial drone photo of the Mississippi River near Vicksburg, MS, looking Northeast at the I-20 bridge, the confluence of the Yazoo River is in the foreground.

Scientists measured the extent of the Gulf of Mexico hypoxia zone in 2020 aboard the R/V Pelican.

NOAA, partners to report on annual Gulf of Mexico ‘dead zone’ monitoring cruise

July 29, 2021

Focus areas:

Topics:

nutrient pollution and hypoxia

Scientists measured the extent of the Gulf of Mexico hypoxia zone in 2020 aboard the R/V Pelican.

Subscribe to hypoxia