28/01/2026
For those who believe the underwater concrete structures for wind turbines will “enhance habitat” or attract fish, I invite you to do what I’ve been doing for the past two decades in this bay—get in the water and see it for yourself. Only then can you truly understand what is at risk here.
I dive regularly in this area and have done so for many years. From firsthand experience underwater, I know this bay is not an empty or degraded seabed. It contains extensive plate coral that often doesn’t show up on sounder surveys because it sits low to the sand. These coral plates form overhangs and ledges that are full of life and provide critical habitat for a wide range of marine species.
What is being described as “replacement habitat” would actually involve destroying an existing, fully functioning coral reef system. Replacing natural coral with concrete foundations is not an ecological win. Yes, concrete can attract barnacles, sponges, algae, and some soft coral over time—but this does not replicate the structure, complexity, or ecological role of mature plate coral reef.
We already have real-world evidence of this in the bay. Concrete Fish Aggregating Devices (FADs) have been in place here for over 15 years, and they have not developed plate coral. This shows that concrete does not naturally turn into the kind of reef that already exists in this location.
From the perspective of someone who spends time underwater in this environment, this proposal represents a net loss to nature and to the bay. Claims that artificial structures can replace existing coral reef are not supported by what is actually happening on the seafloor here, and comparisons to other locations or studies do not apply to the conditions in Geographe Bay.
If renewable energy is to be truly green, the first criterion must be an honest assessment of its impact on existing, fragile habitats. On the destruction of marine habitat alone, this proposal should not receive even cursory support from anyone who values environmental integrity.
Please feel free to share and help spread the word about protecting our world-class marine habitat for generations to come.
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