This one is called the Leafy Seadragon or Phycodurus Eques
They are closely related to seahorses and pipefishes and live mainly in Southern Australian waters. On the tank they were in, the description stated that the mythical Chinese dragon features were gleaned from these species.
Isn't it unbelievable?
From afar, the tank looked like its full of floating seaweed leaves!
I like this meme, I hope to remember to keep joining in! I just sent off the other one of a great field of bluebonnets I found in a quaint hospital pharmacy to our niece in Utah. This one will go to my niece and nephew in California. I know they'll love it!