tiger tunicate...take a picture...cause that's all you have in a few weeks...saw one of these months ago...wanted one, did the research...
"The animal shown here is not a sponge at all– it is a social sea squirt (Synascidian), a member of the Ascidiacae, or tunicate, family. Ironically the ‘Tiger Sponge’ is a Botrylloid Tunicate (Botrylloides sp.). This family is better known for its invasive chokehold abilities, than its dazzling colors. In the aquarium hobby, they are usually sold misnamed and misunderstood to an aquarists that is convinced that this animal’s striking colors and amorphous shape would make it the perfect addition to their reef. Unfortunately they are terribly difficult to sustain."