Climate change impacts are widely documented across species and regions throughout Australia and for these populations to persist, intervention may be required. Marine mega-fauna — which include seabirds, marine mammals, turtles, sharks and rays — play pivotal ecological roles in healthy marine ecosystems and are also of high social and economic value. Many of these species are currently listed as endangered, vulnerable or near threatened. This snapshot illustrates a set of linked methods that can be used to develop and prioritise adaptation options for a wide range of marine species based on the vulnerability framework.