|Released||7 September 2017 (Update)|
|Race||Fossil Island fossil|
|Examine||This fossil is floating on the surface of the pool and will degrade shortly.|
A Bobbing fossil will emerge in the Mycelium pool when enriched bones, pyrophosphite and calcite have been added to the nearby hopper. When these are not poked down, less enriched bones will be produced in the rinsing pool.