Even though Southern Resident killer whales do not eat marine mammals, they have been observed harassing and killing porpoises for decades in the Pacific Northwest. If they aren’t doing this behavior to get food, this leads to the big question of Why? Dr. Deborah Giles, Science & Research Director at Wild Orca, and Sarah Teman, Graduate Student at the University of Washington, joins us on this episode to share their insights and latest research findings into this perplexing behavior.