Dependent on delicately balanced marine food sources, penguins are in trouble.

Adelie penguins hunting for food. (Photo: J. Weller)

Overfishing is decimating their prey species. Climate change is shifting their resources and imperiling their habitat. Pollution is putting even healthy colonies at risk.

More than half of all the 18 penguin species are listed as Vulnerable or Endangered.

In a recent interview, Pablo Garcia Borboroglu, President of the Global Penguin Society, talks about penguin science and conservation.