I’m still very interested in the idea of floating islands as a paradigm for future architectures. This has arisen out of my responses to a range of future challenges such as future sea-level rise, increasing population, the possible future reliance on aquaculture for food. I suspect it also stems from the Australian cultural (and my personal) connection to the coast and the importance of coastal cities, islands and the ocean historically as the medium of  exchange of ideas, globalisation, migration, and commerce.
Richie Sowa’s floating island made from plastic bottles: YouTube …

Looking deeper into the Biorock or as it’s also called “Seament” (thanks to Pia via twitter for the link) I’ve stumbled upon a few terms or keywords that have helped me focus: Biomimetics (also called Biomimicry or Bionics), Biogenic Structures, and something I’m interested in pursuing in terms of our self-sustaining autopoietic community, that is Aquaculture and/or Mariculture.
I’ve also stumbled across a bit more info on our Thrombolites’ cousins the Stromatolites: here (WA Department of Mines and Petroleum), and also some material about geological timescales that may be useful for …