#$%^&*AU2013203731B220150521.pdf#####ABSTRACT A submersible structure for forming an aquatic habitat on a substrate comprising a first body portion for S providing shelter and attachment sites for aquatic life and a second body portion for supporting the first body portion on the substrate, wherein the first body portion is generally radially symmetrical and comprises a plurality of plates that are angled relative to each other 10 and angled relative to the second body portion to redirect fluid flowing across the plurality of plates, the general radial symmetry of the first body portion allowing energy from fluid flowing across the submersible structure from at least three directions to be dissipated by about a 15 similar amount. 4217694_1 (GHMaltars) PO9G96.AU.1113 00C)) 04 0 0