News12 New York
Where to Watch
Download the App
Local
Crime
Weather
beWell
The East End
Crime Files

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

01:25
bknorthgunarrests1030pmCM_2026-04-17-22-33-17

Wild video shows two police chases and gun arrests in Brooklyn

03:50
LN F P2 PM 2

Major cool down with a half-and-half weekend for Brooklyn

01:54
dinosaurbbqgoesextinct1030pmCM_2026-04-17-22-50-37

Beloved Dinosaur BBQ location in Gowanus to close

01:51
trashcontainerizationCM_2026-04-17-17-44-47

City expands trash container program with 10,000 Empire Bins by 2027

01:25
MTBKPostOffice0417_2026-04-17-22-53-41

Park Slope USPS post office reopens after monthlong shutdown

01:56
lindenblvdopenceilingCM_2026-04-17-17-50-52

Tenants raise concerns about East Flatbush apartment building’s new landlord

03:58
duranteamcoverageCM_2026-04-17-22-07-03

Activists condemn decision to release ex-NYPD sergeant on bail in 2023 cooler-throwing death

01:58
BKAVENUEDRIC41726_2026-04-17-05-35-35

2 women hurt during carjacking outside Lowe’s in Mill Basin; police release video of group wanted

00:27
KLNSECURITYGUARDSHOOTINGSENTENCING41726530A_2026-04-17-06-48-44

3 men sentenced for deadly armed robbery that killed security guard in 2020

01:58
BXOXTAILIHOP04175PM_2026-04-17-17-34-39

5 Bronx IHOP locations become first to serve Oxtail

AP26107402152339

Oil prices drop more than 10% and US stocks soar after Iran reopens the Strait of Hormuz

01:38
BKEMMONSAVE41726_2026-04-17-06-09-51

Sheepshead Bay tenants say years of dangerous conditions going unfixed

00:33
NYCLICENSES41726_2026-04-17-06-27-21

New York loses nearly $74 million for not revoking 33,000 questionable licenses for truckers

00:21
michelin star restaurants

Michelin Guide adds five new Brooklyn restaurants to its star list

01:49
herkimerstmultipleshootingCM_2026-04-16-22-43-09

2 men injured in Ocean Hill shooting; gunman on the run

00:25
82255e38-c1e0-4956-a4fb-0451dea06abb

Body found in water near Shore Road Park in Bay Ridge

00:38
carjacking1030pZC_2026-04-16-22-46-50

Carjacking chaos unfolds in Mill Basin: 72-year-old woman in walker struck, another knocked to the ground

00:21
Gunpoint robbery

Man robbed at gunpoint in Crown Heights

01:16
officeronhorsepursuitCM_2026-04-16-22-08-32

NYPD officer on horse chases down purse snatcher in Manhattan

01:51
futureofpachaCM_2026-04-16-22-50-55

New owners of Brooklyn Mirage site, Pacha, hope for fresh start with festivalgoers ahead of June 20 opening date

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