In a story that is becoming terrifyingly common, another yacht was sunk this week by a gang of orcas in the Strait of Gibraltar. And new research from scientists at the University of British Columbia shows that these killer whales are so efficient at breathing, they can perform a dive on just a single breath of air.

The researchers combined drone footage with data from tags suction-cupped to 11 orcas off the coast of B.C. to gather information on the animals’ habits. They found that the whales in their study took about 1.2 breaths per minute while resting, and 1.5 to 1.8 per minute while travelling or hunting.