An orca repeatedly rammed a yacht in a strait between Scotland and Norway last week in yet another aggressive attack by killer whales.

For the last few months, orcas have been slamming into boats in the Strait of Gibraltar off the coasts of Spain and Portugal. But the latest attack came more than 2,000 miles away and is reportedly the first such encounter in northern waters.

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“What I felt [was] most frightening was the very loud breathing of the animal,” Dr. Wim Rutten, a retired Dutch physicist and experienced boater who was sailing solo from Lerwick to Bergen in Norway, The Guardian reported. The orca stayed behind the boat “looking for the keel. Then he disappeared … but came back at fast speed, twice or thrice … and circled a bit.

Read more: Daily Wire