Meet the marine newborns - seaweed IVF begins a new chapter for the Gulf
When I visited the hatchery at SEA LIFE Kelly Tarlton’s recently, I didn’t expect to find myself grinning at a tank full of seaweed. But there I was, leaning over like an excited kid, watching tiny kelp babies drifting around a tank. If you’d told me a few years ago that part of my job would involve celebrating IVF for seaweed, I might not have believed you. Yet here we are, and honestly, it’s fantastic.
These little kelp seedlings are the first signs of success from our partnership between Auckland Council, Mana Whenua and Toi Waihanga as we transform Wynyard Point into Te Ara Tukutuku, a space shaped by mātauranga Māori and science. Above the water we’re turning an old tank farm into a waterfront we can all be proud of, and below, we’re quietly cheering on the comeback of an entire ecosystem.
Watching the kelp in its earliest life stage felt a bit like watching a nursery full of newborns - tiny, fragile, and full of potential. And yes, it really is like IVF for seaweed. We’re giving kelp the boost it needs during its most vulnerable phase so it can eventually grow into the underwater forests the Hauraki Gulf desperately needs. Those forests used to be everywhere. Now, thanks to kina barrens, sediment and warming seas, they’re more like a fading memory.
But the exciting part is that we’re bringing them back.
The seedlings I saw were grown by Greenwave Aotearoa, an EnviroStrat venture doing some seriously clever work. One of their most promising tools is green gravel - tiny stones coated in microscopic kelp. It sounds like something from a marine fairy tale, but it’s real science. Drop the stones onto the seafloor, and the baby kelp grabs hold, grows up, and eventually becomes lush - full of fish, green growth and life.
Early trials using local broodstock show that our Gulf kelp is more than ready for a comeback and research with the University of Waikato is helping fine‑tune the method - momentum is building.
Te Ara Tukutuku is exactly the kind of project that reminds me why collaboration matters. When innovation, mātauranga Māori and community energy come together, things start to happen - good things.
I feel genuinely excited. Because this isn’t just restoration work. It’s a reminder that nature wants to bounce back - and sometimes all it needs is a little nudge, a little creativity, and a team of people who believe in the power of small beginnings.
www.desleysimpson.co.nz
