Prey Remains From Stomachs of Killer Whales (Orcinus orca) Stranded in Alaska, 2005–2021 Marine Mammal Science

Three genetically and behaviorally distinct killer whale (Orcinus orca) ecotypes are found in Alaskan waters: resident, transient, and offshore. These ecotypes are known to occupy different habitats and differ in their morphology, ecology, social structure, foraging behavior, and vocalizations (de Bruyn et al. 2013; Ford 2019; Matkin and Saulitis 1994; Morin et al. 2024). They have different prey preferences and are provisionally recognized as distinct subspecies (The Society for Marine Mammalogy 2024).