There are a lot of these guys in the GBR and Coral Sea. I think they're called "Sea Whips," but I'd have to check a coral ID book to be sure. In particular, I enjoy looking for the little gobies (and supposedly, shrimp, but I have never seen one of those) that live their entire lives on one whip. They blend in perfectly with the coral until artificial light is used.

Norm and Teri, with wire coral, at Watanabe

Upside-down fish, at Cod Wall

Wire coral goby, Wheeler Reef

Wire coral goby, Wheeler Reef

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