WARNING: This article contains graphic images that some may find distressing.
Pilot whales were originally intended to be tagged and released as part of a scientific research program, but the Islands Natural History Museum said it did not have enough staff to carry out the tagging.
Instead of releasing the dolphins into the ocean, the whalers decided to shoot them down.
Valentina Crast, an activist for the Sea Shepherd campaign group, said the killings were “inexcusable”.
She told Sky News: “Apparently the last hunt and the criticism that followed didn’t make them rethink their behavior. It seems that it was done in spite of it.
“Initially, they had a scientific research program where they tracked pilot whales, watched them and saw where they were, but because they didn’t have enough people to do the tagging, they decided to kill them.
“They could have just chased them out to sea, they didn’t have to at all. “
Sea Shepherd shared footage with Sky News showing the bodies of the dolphins after their deaths.
The massacre took place on a beach that had recently been authorized to kill pilot whales after being unused for 40 years.
He comes after the group published graphic images showing hundreds of dead animals lying on a beach in the September 19 killings, while others were herded in shallow water by boats and jet skis before being shot.
Wednesday night’s killings took place less than 10 km from the beach where 1,428 Atlantic white-sided dolphins were killed.
The slaughter was part of a hunt called Grindadrap which involves animals having their necks cut with knives or being killed with harpoons.
It’s been part of the island’s tradition since the 9th century, and the meat and fat of the animals is shared within the community.
Ms Crast said the whalers had conducted the hunt “despite the pressure placed on them by the international community”.
She said the meat from the hunt would be distributed among those who participated, then donated to the local community, and then sold to restaurants and supermarkets.
The new massacre comes after the Faroe Islands government announced it would revise regulations governing traditional hunts after the “super pod” was slaughtered earlier this month.
He said the catches were a record, as typically around 250 dolphins and 600 pilot whales are caught in Faroese waters each year.
“We take this matter very seriously. Although these hunts are considered sustainable, we will take a close look at the dolphin hunts and the role they should play in Faroese society, ”Prime Minister Bardur told Steig Nielsen on Saturday.