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The Leafy Sea Dragon
This fish is closely related to the sea horse, and is located in the southern and western coasts of Australia. It is called the Leafy Sea Dragon due to the leaf-like appendages and colors that cover this fish’s body. To appear even more like a piece of seaweed, they swim slowly using their nearly invisible dorsal and pectoral fins. Even more strangely, the females lay their eggs into the male with a long tube, and the male carries the babies until they hatch.
Image Source: National Geographic