A man who started a website that tracks orca incidents with boats near Spain and Portugal said that encounters happen at least every day now

  • Orca encounters are happening very frequently off the coasts of Spain and Portugal.

  • A man who has been tracking sightings and attacks said there's "one incident every day, on average."

  • In some cases, there's been more than one reported attack in a single day this month.

Rui Alves launched a website last year, orcas.pt, that tracks orca encounters with boats — both sightings and attacks off the coast of Portugal and near the Strait of Gibraltar, located between Spain and Morocco.

Orca incidents have been on the rise in the area in recent months and may continue to increase. There's already been a unusual number of boat attacks.

According to Alves' map, there's been at least one killer whale encounter every single day in the area in June. The map shows 10 attacks since June 1 and an additional 12 orca sightings in the same time period.

"We are having one incident every day, on average, OK? There are days we have two or three," Alves said in an interview with PBS.

On some days, there are multiple attacks. For example, on June 3, there were four identified orca attacks, and on June 8, there were two.

Alves' site allows sailors along the coasts of Spain and Portugal to report these incidents and their locations, PBS reported.

"It was an idea. If you spread the word about something that happens in an area, people will avoid that area," Alves told PBS. "Maybe they will keep the boat and say, 'I don't sail today because there are many orcas at that point. I will sail tomorrow, or maybe I will go in another direction.'"

Why these orcas are spending so much time around boats is unclear. One theory is that a single traumatized orca, called White Gladis, is behind the attacks and other killer whales are imitating her. But other experts suggest the orcas just want to play.

Whatever the reason, these apex predators are not to be underestimated. They've been known to hunt great white sharks and even blue whales. If you encounter a killer whale, there are some important rules to follow, but first and foremost: Never enter the water with them.

This story is developing. Please check back for updates.

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