Presa

In a healthy ecosystem, prey and predatory species maintain a balance through predation, which helps sustain the ecosystem. Prey species can also be predators. For instance, Pacific salmon are preyed upon by bears and other animals, but they also prey on krill and small fish like anchovies.

What role do prey and predatory species play in a healthy ecosystem?

How does predation contribute to the sustainability of prey species?

Can prey species also be predators? Provide examples.

What animals prey on Pacific salmon?

What smaller creatures do Pacific salmon prey on?