The unexplained behavior has resulted in more than 700 cases of killer whales attacking and damaging boats.
Sailors off the Iberian coast have been attempting to find ways to protect their boats from being attacked by killer whales.
The seaborne mammals have sunk 3 boats and damaged 100 more over the past 18 months or so.
Despite their fearsome reputation, these monster sharks will always try to steer clear of one particular creature.
A 14-year-old orca named Wikie has succeeded in imitating some of the words spoken by her trainer.