Perhaps it is not an invasion, but it is surprising. A while back I posted about a huge biomass living 1.6 kilometers beneath the sea floor. Well, these are not the same critters. But they are just as interesting. While scientists have not ruled out whether they prove the existence of a shoggoth or Ubbo-Sathla, researchers have decided that these sturdy micro-organisms do account for nearly one-tenth of the biomass on Earth. That is one HUGE biomass. And while these critters are living on a geologic timescale - meaning they live for several centuries - it seems they do interact with the environment. Quoting one of the scientists involved in the investigation:
These microbes influence the Earth's long-term carbon cycle and also these microbes may be quite ancient.So what's the big deal about such small things? Other than the vast quantity, researchers are now suggesting that similar creatures could live in other locations in our solar system - citing Jupiter's moon Europa as one of the many potential locations (these worlds belong to you, except Europa - quote from the novel 2010).
For those following this sort of news, predicting life on Europa isn't new. Really, it is probably a "safe bet." It is an icy body in space with what is believed to be a sub-surface ocean. So beneath that ocean surface could be lurking the elusive shoggoth.