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.
A 14-year-old orca named Wikie has succeeded in imitating some of the words spoken by her trainer.
A 105-year-old killer whale is still going strong after being sighted off the coast of Washington State.
It has been revealed that Killer whales visit their own type of social clubs much the same way as humans do with congreg...