Three real-life scenarios that show why a quick response is best
Exotic caulerpa is serious, but these marine invasions overseas are possibly worse.
1.
Our South Australian neighbours are dealing with a severe algal bloom attributed to flooding, nutrients and the marine heatwave. While algae is a vital part of our ecosystem, the Karenia species that has appeared here is harmful to fish and some marine mammals and it’s having a serious impact on South Australia's marine industries, native ecosystems, and recreational enjoyment of the sea.
2.
Sargassum is a great example of a normally beneficial species getting out of balance and causing problems. Sargassum - a brown algae that floats on the surface of the ocean - is often seen in New Zealand where it’s a sign things are healthy. But in the Caribbean and Atlantic an influx of it is causing huge problems - not only for humans but for natural ecosystems too.
3.
Back in the late 90s, the Black Striped Mussel was detected in three enclosed marinas in Darwin. It was the first recorded marine pest incursion in Australian tropical waters. Authorities moved quickly, quarantining the affected marinas and launching a coordinated, whole-of-government response. Within weeks, scientists and agencies applied targeted chemical treatments, including copper sulphate, in the enclosed marina waters. The results were decisive. By late April 1999, 100% of the mussels had been eliminated, and the marinas were reopened. Yes!
By reporting anything unusual you see, you can help us stop incursions or issues before they get too big.