01/06/2026
Hey Birdies, in case you haven’t heard, an exciting 21-year long study was just released on Type D killer whales, which are among the most mysterious (and in**ed) cetaceans on Earth. Thanks to Whale Scientists for this amazing illustration highlighting some of the findings!
Officially described in 2011, these elusive orcas are rarely seen and remain one of the least-studied killer whale ecotypes. A newly released study has revealed that they are more numerous and far more wide-ranging than scientists once believed, with some individuals traveling over 4,400 km between the southern Indian and South Atlantic Ocean; the longest east-west movement ever documented in a killer whale.
The study also uncovered a fascinating cultural divide. About half of all known Type D orcas have learned to steal Patagonian toothfish from commercial longlines, a behavior passed down through generations within close-knit social groups. The other half have never been observed doing so, despite sharing the same waters and opportunities.
Slides 2-3 highlight an encounter our team had with Type D killer whales in Antarctica, a rare opportunity to observe one of the ocean’s most enigmatic apex predators. As researchers continue to uncover the secrets of these remarkable animals, every recorded observation helps expand our understanding of orca culture and life in the Southern Ocean.
