Dolphins filmed in the Bronx River in New York

Two dolphins were filmed in the Bronx River in New York several days ago,

reports .

The city's parks and recreation department confirmed the information in a tweet posted on January 19, welcoming the return of cetaceans to the river after several years of absence.

"This is great news - it shows that the decades-long effort to restore the river as a healthy habitat is working," the service wrote on social media.

It's true—dolphins were spotted in the Bronx River this week!

This is great news—it shows that the decades-long effort to restore the river as a healthy habitat is working.

We believe these dolphins naturally found their way to the river in search of fish.

(Video: Nick Banco) pic.twitter.com/40ZNgBjJZs

— NYC Parks (@NYCParks) January 19, 2023

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The Bronx River has suffered from pollution related to the dumping of waste from nearby factories.

For many years, it turned into an open dumping ground for New York's businesses and various neighborhoods.

But efforts have been made to reverse the trend and fish have even been reintroduced to attract dolphins, says the British newspaper.

Do not disturb them

“We've come a long way through decades of improving the environment, cleaning up, water quality, better environmental stewardship, better relationships.

All of this helps the overall environment and then leads to the recovery of these ecosystems,” Howard Rosenbaum, a dolphin expert

, told The

The Bronx River rises north of New York before plunging into the East River.

Bottlenose dolphins were observed last year in this estuary which separates the American city from New Jersey.

Proud of the return of marine animals to the Bronx, the Department of Parks and Recreation still wanted to warn onlookers: "Make sure they are comfortable during their visit by giving them space and not disturbing them.

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