 The study reviews evidence of the responses of marine life to recent climate change across ocean regions and finds that general trends include poleward and deeper distributional shifts, advances in spring phenology, declines in calcification and increases in the abundance of warm water species. However, the volume and type of evidence of these impacts varies across ocean regions and taxonomic groups, with most investigations focusing on temperature changes and few observations of effects from changing oxygen, wave climate, precipitation or ocean acidification. The study also highlights that while observations of species' responses linked to anthropogenic climate change are widespread, they are still lacking for some taxonomic groups such as phytoplankton, benthic invertebrates and marine mammals.