Joelle Designs just finished her newest kit called Mermaid Bay. And it turned out to be such a magical oceanworld! It has some awesome mermaid tails in it you can use for your extractions. And wow, I'm so much in love with the dolphins and swimming turtles. There are also beautiful coral, reef and shells included. Not to mention the gorgeous background papers. I'm sure you all would love to play with this.
Look at the preview of the kit and the papers.
Here are the two layouts I already made with this kit.