The dolphin entangled in a fishing line at Bedok Jetty on Saturday, April 7, has been freed.

Animal Concerns Research & Education Society (Acres) conducted a rescue operation that lasted more than an hour.

Acres shared a video of two people in the water helping the dolphin in a Facebook post on Tuesday.

Rescued one day after it got caught by angler

Acres' Wildlife Rescue Team sighted the dolphin on Sunday, along East Coast Park, west of Bedok Jetty.

It took an hour to remove all the netting which had fishing weights attached to it.

Acres said in its Facebook post. "We removed a total of 8kg of fish net and line material."

The dolphin had been first spotted at around 7.30am on Saturday, drawing a crowd of onlookers. It was reeled in by an angler who then cut the line to free the dolphin.

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Dolphin looked weak

One Acres personnel and another volunteer went out to sea with a dinghy on Sunday afternoon after they received reports of dolphin sightings.

The dolphin looked weak at that point in time before the rescue.

However, after it was freed, it was spotted in deeper waters away from the shore.

Acres thanked the National Parks Board and the National Sailing Club, as well as those who alerted them to sightings of the dolphin.

It was believed to have remained in shallow waters over the weekend as it could not dive deep.