Common Seadragon (Weedy) The common seadragon is Victoria's State Marine Emblem. This exquisite marine creature is related to the seahorse and you'll find it gracefully perusing amongst the kelp and seagrass beds. This diminutive, cute weedy seadragon can be worn attached to a jacket or purse zipper. Dimensions: 20mm*34mm Colour: tarnish resistant silver metal with purple bands Metal: nickel free imitation rhodium plating on quality brass Packaging: Australian made and sustainably printed on post consumer recycled cardstock featuring beach themed artwork.