Celebrate Science Week with the Great Southern BioBlitz 2025 – Australia’s Biodiversity in Focus!

This Science Week, let’s celebrate the incredible diversity of life across Australia – and start planning for one of the biggest citizen science events of the year, the Great Southern BioBlitz!

From Friday 24 to Monday 27 October 2025, communities across the Southern Hemisphere will head outdoors to document as many wild plants, animals, fungi, and other organisms as possible. Using iNaturalist, participants will upload their observations to help build a richer picture of our biodiversity – right in the middle of our bursting spring season.

The Great Southern BioBlitz (GSB) is all about connection – connecting people to nature, connecting communities to each other, and connecting observations to science. Whether you’re in the city, bush, reef, or desert, there’s a project near you ready to welcome your contributions.

You can make observations anytime during the four-day window, then upload them until 10 November 2025 for them to count towards the event.

🦋 Why October?

By late October, nature is buzzing. Flowers are in full bloom, pollinators are on the move, reptiles are basking, and migratory birds are arriving. It’s the perfect time to get outside and record the life around you.

📍 Find Your Local GSB Project

This year, Australia boasts 38 active GSB projects – from the Top End to Tasmania, Greater Perth to the Great Barrier Reef. Click your region below to join and start planning your GSB adventure:

ACT & NSW

• Canberra

• Murrumbidgee

• Central Tablelands NSW

• Armidale Region

• Lake Mac City

• Clarence Valley

• Parramatta / Greater Sydney

• Tenterfield Region

• Snowy Monaro Region NSW

• Greater Sydney

• Illawarra Region

QLD

• Townsville

• Little Liverpool Range Initiative

• Ipswich, Queensland

• City of Logan

• Gold Coast

• City of Moreton Bay

• Great Barrier Reef

SA

• Greater Adelaide

TAS

• Tasmania

VIC

• Mornington Peninsula Shire

• Castlemaine Region

• Manningham City Council

• Murrindindi Shire

• Latrobe City

• Bayside YWNA

• Colac Otway Shire

• City of Whittlesea region

• Ballarat Region

• City of Greater Geelong

• Greater Melbourne

• Surf Coast

NT

Top End WA

• Greater Perth

• Exmouth, Carnarvon & Ashburton

• Shire of Dandaragan

💡 How to Get Involved

1. Join your local project on iNaturalist.

2. Make observations of wild plants, animals, fungi, and more between 24–27 October.

3. Upload by 10 November to have them count towards the final tally.

4. Help identify other people’s observations to improve data quality.

📣 Spread the Word

This Science Week, share the excitement! Invite friends, family, schools, and community groups to join in. The more people we have participating, the more we’ll learn about the biodiversity in our own backyards.

Follow the Great Southern BioBlitz on Facebook, Instagram, and BlueSky, for updates and highlights.