Another feature of this area is where one of the dive shops have made some small metal structures in an effort to promote coral regeneration. (tioman-scuba.com)
All stick toys need to be replaced if your pet chews them down far enough to expose the underlying metal structure. (thesprucepets.com)
An adjacent, sealed - off metal structure held the transmitter, connected by wires to a source on DVD just outside. (haberarts.com)