Another strange āattackā by killer whales has been reported off the coast of Sines.
A German solo sailor put in a distress call on Tuesday after the rudder of his boat was so badly damaged that he couldnāt navigate.
As in previous episodes reported this year, when rescuers arrived the whales (the largest of the dolphin family and also known as orcas) proceeded to āattackā their boat too.
These baffling incidents have been causing concern for some months.
Back in September, the UK Guardian reported that āscientists have been baffledā. At the time these attacks were most prevalent in Spanish waters.
āIn the last two months, from southern to northern Spain, sailors have sent distress calls after worrying encounters. Two boats lost part of their rudders, at least one crew member suffered bruising from the impact of the ramming, and several boats sustained serious damageā, said the paper.
Now, Radio Sines says this is the third incident of its kind along the Alentejan coast.
The group of orcas is one that is āseen with frequency off Sinesā – and one which now sailors will need to watch out for.
In this latest case, the 60-year-old solo sailor was successfully towed into Sines. He had apparently set out from Cascais en-route for the Algarve.
The āattackā began when he was alongside Largo de Santo AndrĆ©.
Describing the mammals as āhighly intelligentā and āsocialā, researchers who study a small population of orcas in the Strait of Gibraltar told the Guardian in September that it is perfectly normal for these creatures to follow a boat closely, āeven to interact with the rudder, but never with the force suggestedā.
At the time, Spanish maritime authorities warned vessels to ākeep a distanceā. But reports from sailors around the strait throughout last summer said this was difficult ā as at least one pod appeared to be pursuing boats in behaviour that was āhighly unusualā and āconcerningā.
Said the Guardian at the time: āIt is too early to understand what is going on, but it might indicate stress in a population that is endangeredā.