Part five of the NecronomiCon 2013 talk on the biology of Lovecraft’s creatures: Shoggoths, with two more sections on shoggoths still to come…
“I see the Shoggoth as a endosymbiotic organism as well, being far more complex than the lichen (or human for that matter). Given their extreme plasticity and adaptability, the Shoggoth is probably a conglomeration of eukaryotic and prokaryotic cells.”