Killer whales (also called orcas) are apex predators, meaning they are at the top of their food chain. They feed on fish and squid like other odontocetes (toothed whales) do, but will also target ...

However, DDTs persist in the environment and accumulate in organisms throughout the food chain, leading to particularly high concentrations in top predators like killer whales. DDTs are known as ...

Killer whales are one of the most successful predators ... It's really like having the food chain just laid out in front of you. People think you're going to go, you're gonna do marine biology ...

When populations of top predators like killer whales steadily decline year over ... failure because food is scarce up and down the food chain. And that food chain starts with kelp, a super seaweed.

Like killer whale families all across the world, sons, daughters, and grandchildren stay with their mothers their entire lives, relying on her knowledge of where to find and how to catch food. As ...