Previous incident may have led Orcas to target boats, say experts

Inquiry into encounters off coasts of Spain and Portugal says speed could be a factor

Experts investigating a series of extraordinary encounters between orcas and yachts off the coasts of Spain and Portugal believe the animals responsible may have been triggered to target boat rudders by an earlier aversive incident" involving some kind of vessel.

Related: 'They were having a real go': man tells of orca encounter off Spain