New Zealands's Mysterious Sponge-like Creature

Kryptonomic writes: "New Zealand's marine experts are puzzled by the parasitic sponge-like animal that could threaten NZ's aquaculture industry. Apparently the animal, which so far has not been identified, kills all other sealife by embedding itself on the victim and slowly feeding on it. The parasite also reproduces asexually and could end up dominating the ecological niche it occupies."