Ultramarine: the science of our oceans and waterways
Jan 4, 2026 · 32 min · 11 segments
In this Ultramarine episode of the Connect Sci Podcast, host David Boldeman speaks with Sean Daly from Citizens of the Reef about how students, teachers, and everyday Australians can play a real role…
Sean DalyGuest
David BoldemanHost
And why are the reefs so useful to nature? I've gone a bit down the rabbit hole of understanding that.

So the Great Barrier Reef and reefs in general support a massive biodiversity of life.

So yeah, coral reefs are basically the cities in the ocean where you have all the different species, whether it's fish, mammals, crustaceans, corals, all living in one space.

And then in those open ocean areas, they're maybe like your kind of you know, the fields rather than the cities.

So what's really important is that we keep those particular ecosystems healthy and vibrant so that all those species can continue to live there.

Because if we lose that small percentage of our oceans where the coral reefs are, we're going to lose so much more than the proportional amount of our biodiversity and species.

Yeah, and so if you're compromising an ability for, you know, underwater nature to live together, that can't be a good thing.

And why are the reefs so useful to nature? I've gone a bit down the rabbit hole of understanding that.

So the Great Barrier Reef and reefs in general support a massive biodiversity of life.

So yeah, coral reefs are basically the cities in the ocean where you have all the different species, whether it's fish, mammals, crustaceans, corals, all living in one space.

And then in those open ocean areas, they're maybe like your kind of you know, the fields rather than the cities.

So what's really important is that we keep those particular ecosystems healthy and vibrant so that all those species can continue to live there.

Because if we lose that small percentage of our oceans where the coral reefs are, we're going to lose so much more than the proportional amount of our biodiversity and species.

Yeah, and so if you're compromising an ability for, you know, underwater nature to live together, that can't be a good thing.
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