Penguins - A Sentinel Species?

In a recent article in the New York Times, P. Dee Boersma, a longtime penguin researcher, warns that the declining numbers of some penguin species bode poorly for the marine environment as a whole. Threats to penguins include overfishing, pollution, and climate change. Although these animals may live far away, their problems cannot be ignored. Check out some more articles about the impact of environmental problems on penguins here, and here.