In the Vanguard X campaign, one of Goblin's weirder abilities was the power to alter her form in a limited way to adapt to different conditions- She can't completely remove any of her skeletal structure, but she can change their shapes- here, she's adapted to being underwater, complete with the ability to breathe. Eventually she learns to effectively use a more truly 'mermaid' form. Goblin is Copyright to me, Art is by ( http://www.furaffinity.net/user/wom-bat/ ), Vanguard X is Copyright David Rust.