This is a slime mould (or myxomycete) which, despite the word mould, is not a fungus. It's in between the mobile, feeding stage and the final powdery, sporing stage. Might be Fuligo septica.
Must agree with Heino; this appears to be a Fuligo septica which will slowly darken in colour prior to sheading its dark spores when fully mature. Do hope you are able to observe it over the next few days and perhaps add some extra images.
This slime mould was recorded on 2 January 2022, (and only just uploaded to Nature Mapr when I got the App to work ) so I can't report on what happed after this observation.
Describe how you intend to use these images and/or audio files and your request will be sent to the author for consideration.
Your request has been successfully submitted to the author for consideration.
2,167,030 sightings of 20,573 species in 6,801 locations from 11,955 contributors
CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.