Gemma Clucas Browse All Authors Famous Quotes by Gemma Clucas The two sexes in penguins behave very similarly to one another, they look almost identical to one another. Behaviorally, they act very similarly as well, particularly in terms of reproduction -- both males and females invest pretty equally in raising their chicks. Gemma Clucas travel The distances from the open ocean, where the penguins feed, to the stable sea ice, where they breed, was probably too far, the three populations that did manage to survive may have done so by breeding near to polynyas — areas of ocean that are kept free of sea ice by wind and currents. Gemma Clucas science