News12 New York
N12 Originals
Numbers & Links
Local
Crime
Weather
Politics
Taxing Long Island
Partly Cloudy
83°
Local
Crime
Weather
Politics
Taxing Long Island

Oxygen levels in Long Island Sound reach healthiest levels in 30 years

The improvement is already helping marine life rebound, with more fish and other species returning to the body of water.

Daniella Rodriguez

Dec 15, 2025, 10:21 PM

Updated

Share:

More Stories

Oxygen levels in the Long Island Sound are at their healthiest point in three decades, according to new research from the Long Island Sound Partnership.

It marks a major milestone after years of environmental decline.

The improvement is already helping marine life rebound, with more fish and other species returning to the body of water.

“You can think back 30 years ago, and you were not able to see any [dolphins or whales] in the Long Island Sound,” said Michael Martucci, the Environmental Protection Agency’s Region 2 administrator.

The findings come decades after a massive lobster die-off and years of hypoxia – low oxygen conditions that can lead to fish kills and the loss of marine ecosystems.

Martucci says better water quality has a direct impact on the Sound’s biodiversity.

“Better water quality brings more marine life to the area, more fish,” Martucci said.

The EPA says the progress is the result of decades of coordinated work, including reducing garbage, stormwater runoff and nitrogen pollution. Excess nitrogen can fuel harmful algae blooms that deplete oxygen in the water.

While the changes may not be obvious at a glance, higher oxygen levels are already creating healthier conditions for fish, shellfish and other marine life throughout the Sound.

The Long Island Sound Partnership says continued conservation efforts will be critical to maintaining the gains and ensuring oxygen levels, and marine life, continue to thrive in the years ahead.

More Stories

Top Stories

01:35
dc9dee1c-d28d-4a52-810a-c1f18b7e1979

Glen Cove police searching for pair of illegal e-bike riders interfering with traffic stops

01:40
F P2 PM 1

Sun and clouds with temperatures above average for Long Island

guilty plea

Suffolk contractor pleads guilty to attempted grand larceny for stealing over $90K from customers

00:26
813hicksvillelarceny_subclip_2026-08-13-12-39-39

Hicksville man charged with grand larceny after stealing $9.5K, promising debt relief

00:30
hit and run arrest

Truck driver arrested for hitting mom and toddler, leaving the scene

00:17
LIExpresswayOverturnKK_2026-08-13-12-29-24

Car overturns on Seaford-Oyster Bay Expressway

GENERIC POLICE LIGHTS

Brooklyn woman accused of stealing nearly $12K from Melville Ralph’s owner

00:27
LIDWIPLEA813_2026-08-13-05-18-21

Man pleads guilty to high-speed fatal DWI crash in Freeport

00:37
aacb4e8c-71fc-4786-8be5-cc9343cbeadd

Crews repair water main break that caused large Smithtown sinkhole

00:17
BIRD AND BAO

Popular Patchogue Asian-fusion restaurant closing

01:04
813eastend_2026-08-13-05-48-55

The East End: The Harvest Inn in North Fork

01:45
813taxingLI_2026-08-13-05-46-55

Nassau senior discount program sees surge in interest after News 12 report

01:29
8132026NJdts_2026-08-13-06-09-04

Down The Shore: Wall Stadium's high-speed racing action continues to thrill generations of race fans

01:40
813longislandroadtrip_2026-08-13-05-29-25

Road Trip Close to Home: Aunt Jake's in Huntington

01:39
deabfcfa-2e0c-41c9-9366-8ecd8169773a

Two men found dead from gunshot wounds in Hempstead home

02:02
ebike812_2026-08-12-18-28-53

E-bike crashes surge nearly 300% since 2017 as teen on illegal e-motorcycle nearly hits Suffolk police car

01:55
LI 5PM WED_Cecilia Shwally Folo_ajc_2026-08-12-17-17-20

Drunk driver who killed 4 people in Deer Park salon crash sentenced to 25 years to life

01:55
juliapkg0812_2026-08-12-21-45-45

Top NY officials discuss legal aid for immigrant minors, condemn possibility of ICE shock gloves

00:31
Gold Bar Scam MS 071326_2026-07-13-17-09-34

Suffolk detectives stop man from buying $466K in gold bars for internet scammer

00:53
LIFloralParkKK_2026-08-12-19-29-25

Floral Park man says woman tried to steal gold chain in ‘sleight-of-hand’ scam

App StoreGoogle Play Store

info

Newsletter

Send Photos/Videos

Contact

About Us

News Team

News 12 New York

follow us

Twitter

Facebook

Instagram

more resources

Optimum Corporate

Optimum Service

Advertise on News 12

Careers

Content Removal Policy

© 2026 N12N, LLC

Privacy Policy

Terms of Service

Ad Choices