The Hong Kong Wildlife Health Foundation has launched a campaign to raise awareness to the concept of One Health in relation to wildlife and in particular marine mammals. Marine mammals not only ensure the balance of the marine ecosystem but also act as indicators of ocean health. A bilingual English/ Chinese leaflet has been produced. The leaflet focuses on actions to take if encountering a stranded porpoise or dolphin. Leaflets are distributed to veterinary clinics in Hong Kong, as well as being available on the Hong Kong Wildlife Health website.