Hell-bent on revenge after being hit by boat, an orca named Gladis is now teaching others to attack, researchers believe.
A vengeful killer whale called Gladis is teaching gangs of orcas to attack yachts around Gibraltar, and has already struck three boats – sinking two of them.
It may read like something out of Moby Dick, but in this case the truth is stranger than fiction.
Researchers believe that a female orca called White Gladis is seeking revenge after being traumatised by a collision with a boat, or being trapped in illegal fishing nets.