The “star effect” of flagship species has a good role in promoting biodiversity conservation and national park construction. China attaches great importance to marine conservation, and selecting ideal species as flagship species plays an important role in promoting marine conservation. Sea turtles are marine living fossil species and are listed under level-I protection on the “List of Wildlife under Special State Protection”. They play an important role in the balance and stability of marine biodiversity and ecosystem. The unique appearance features of sea turtles make them highly recognizable, and their lovely image and special life history make them full of charm. The history of sea turtles being used in China is quite long and has very high cultural values. Sea turtles are highly encountered and accessible in coastal areas and have good relationships with local communities. In conclusion, we believe that sea turtles are ideal flagship species for marine conservation.