Global Southern Bioblitz | 28 – 31 October 2022

It is that time of year again for Tshwane citizen scientists to showcase the vast biodiversity seen throughout the Southern Hemisphere in the blooming springtime. We invite SANBI colleagues and all past Tshwane City Nature Challenge (CNC) members and participants to join our Great Southern BioBlitz project in the Tshwane region.

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. 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. GSB22 will be held from 28th of October until the end of 31st of October 2022.

It is a BioBlitz-style competition where cities around the world are in a contest against each other to see who can make the most observations of biodiversity, who can find the most diverse species, and who can engage the most people.

How to get involved?

To take part, download the free iNaturalist app onto your smartphone or tablet; take photos using the app and uploading . Your records will then be identified by a community of iNaturalist, and you can also help other to identify what they find.

If you are interested, use this link to register a group:

Join and follow these projects!
Participating cities can be vied here-:

Follow for social media feeds:
iNaturalist SA –
GSB Organisers –
GSB Instagram –
GSB Twitter-

In 2022 34 places (as 15 towns, 14 regions & 5 countries) in 9 countries in southern and central Africa are taking part in the Great Southern Bioblitz 2022. Please join in the fun!

For more information, please contact Namhla Mbona and Puseletso Nkadimeng