Killer whale moms spend a lot of energy and resources on their adult sons. Research shows that could impact their reproductive success long-term. It takes a lot of effort to raise a kid ...

Killer whale moms are still supporting their adult sons — and it's costing them. ... an adult female killer whale (dubbed K16 by those who know her well) gave birth to a son, K35.

Whale watchers on a boat off the coast of California captured the incredible moment an adult killer whale taught its offspring how to hunt by flinging common murres into the air on September 7.

Like a proud cat leaving a bird on its owner's doorstep, orcas—also called killer whales—may sometimes offer to share their ...

The grieving killer whale mom and her family — Tahlequah has two living sons — were spotted traveling together in Haro Strait off of Washington’s San Juan Island on the morning of Friday ...

One killer whale was caught this season by trawlers targeting flatfish in the Bering Sea, down from nine last year. The trawlers had deployed underwater web fences to try to keep killer whales ...

Twenty years ago, in the waters off the coast of Washington State and British Columbia, an adult female killer whale (dubbed K16 by those who know her well) gave birth to a son, K35. "These two have ...

Twenty years ago, in the waters off the coast of Washington State and British Columbia, an adult female killer whale (dubbed K16 by those who know her well) gave birth to a son, K35. "These two ...

Twenty years ago, in the waters off the coast of Washington State and British Columbia, an adult female killer whale (dubbed K16 by those who know her well) gave birth to a son, K35. "These two ...