It is a unique marine organism belonging to the Syngnathidae family. Mainly distributed in the temperate waters along the southern coast of Australia. The body is slender, with a length of up to 30 centimeters, resembling seaweed in appearance, and has excellent camouflage ability. The body is covered with leaf shaped skin flaps, which not only help them hide in the underwater environment, but also facilitate their swimming in the water. The body color is diverse, usually green, yellow, or brown, and the skin flap often has red or black spots. Feed on small crustaceans such as shrimp and small fish. The breeding method is also very interesting. Males will hatch the eggs laid by females until the small sea dragon hatches.