An unidentified group of orcas attacked and sank a yacht in Moroccan waters near the Strait of Gibraltar.

By Arforbes

The Spanish Maritime  

Rescue Service received an emergency call from two passengers who felt their boat being rammed and noticed it was taking on water.

The yacht,  

named Alboran Cognac, was abandoned by its passengers and eventually sank.

The passengers were rescued by a passing oil tanker.

This incident adds to a series of orca attacks on vessels in the Strait of Gibraltar over the last four years.

Scientists are uncertain about the precise reasons behind this behavior but suggest it could be attributed to "copycat" or "playful" actions by the highly intelligent mammals.

The orcas involved 

 in the incident have not responded to inquiries.

The exact number of 

 orcas involved in the attack remains unknown.