Scientists and sailors say orcas, also known as killer whales, are stepping up "attacks" on yachts along Europe's Iberian coast, with one skipper who's been pursued by the marine mammals on two separate occasions suggesting that their tactics are becoming more stealthy.
Delivery skipper Dan Kriz, who had to be towed into port after orcas destroyed the rudder on a boat he was on in 2020, had an almost identical experience in April.
