New and alarming evidence has been published by Trivelpiece et al. recently about the reduction of the populations of Adélie (Pygoscelis adeliae) and chinstrap penguins (Pygoscelis antarctica) in the West Antarctic Peninsula/Scotia Sea area. According to this scientific paper, Adélie and chinstrap penguin populations have declined more than 50% during the last 30 years at study colonies in the South Shetland Islands. This is consistent with the declines in both species throughout the Scotia Sea. Trivelpiece et al. argue that the reduction of the populations of both species could be attributed to changes in the abundance of their main prey, Antarctic krill, which is affected by climate change. In this context, CCAMLR should keep a precautionary approach in the management of the krill fishery to reduce significant impacts on these species. CM 51-07 should be maintained until sufficient information is acquired for its revision.