Sea urchins are known to provide biogenic habitat to a range of fish and invertebrates through their unique structures. However, the potential for the habitat-modifying urchin Centrostephanus rodgersii (long-spined urchin) to provide habitat is unknown. While there are reports of various taxa living around or under C. rodgersii structures, the mechanisms influencing host selection are unclear. To investigate C. rodgersii as a potential habitat provider, we observed 32 individual urchins via Remote Underwater Video (RUV) at Bass Point, New South Wales. We also undertook a manipulative experiment where C. rodgersii were substituted for artificial urchin-like structures and similarly filmed to discern whether associated taxa would behave differently. A range of fish and invertebrate species were found to associate with C. rodgersii, such as Lepidoblennius haplodactylos (Eastern Jumping Blenny), Aspasmogaster costata (Eastern Clingfish) and Astraea tentoriiformis (Tent Snail). We hypothesized that urchin size would influence host selection but found no effect of test size on associate abundance or species richness. There was also no discernible difference in associate abundance and species richness between real urchins and artificial models. These preliminary findings suggest that C. rodgersii, besides being a habitat modifier, is an ecologically important habitat provider.