A dragon turtle (龙龟, Lóngguī) is a legendary Chinese creature that combines two of the four celestial animals of Chinese mythology: the body of a turtle with a dragon is promoted as a positive ornament in Feng Shui, symbolizing courage, determination, fertility, longevity, power, success, and support. Decorative carvings or statuettes of the creature are traditionally placed facing the window.
Mapmakers sometimes drew dragon turtles along with other fantastical creatures in unexplored areas.
References
Dragon turtle Wikipedia(Text) CC BY-SA