What I can only describe as some form of microscopic fart-cannon, the free and open source evolution sim Thrive has added what they call a Mucilage Jet for your creatures in version 0.5.10.
Read the full article here: https://www.gamingonlinux.com/2022/09/free-evolution-sim-thrive-adds-a-new-part-to-let-organisms-spew-mucilage