Great Southern BioBlitz 2023

Join us for the biggest bioblitz event across the southern hemisphere!

The ‘Great Southern BioBlitz’, or ‘GSB’ for short, is an international period of intense biological surveying in an attempt to record all the living species across the Southern Hemisphere in Spring.

#GSB23 will be held November 24th – 27th, incorporating different communities, areas and regions across the Southern Hemisphere.

You can find the GSB 2023 Tasmania project on iNaturalist here:

Discover what wild things inhabit the Southern Hemisphere in the Great Southern BioBlitz!

The purpose of this event is to highlight both the immense biodiversity spread across the Southern Hemisphere in the flourishing springtime, as well as to engage the greater public in science and nature learning, increasing biodiversity awareness through Citizen Science.

To find out more information about this international event, check out our website at

Follow us on Twitter, Facebook or Instagram (@gsbioblitz)

And use the following hashtags on social media: #GSB23 #GreatSouthernBioBlitz

Check out this summary blog about the 2020 Great Southern Bioblitz ‘Great Southern Bioblitz – Amazing First Year!’ by Pete Crowcroft (AKA @possumpete)

We acknowledge the Tasmanian first nations people and their ancestral connection to the land of lutruwita (Tasmania).
We pay respect to Elders past, present and emerging.

GSB 2023 Tasmanian Facebook page