Welcome. Made a mistake. I meant *antarctic krill.

The collective biomass of protozoa, bacteria, fungi and plants outweighs the rest of life on Earth by a huge margin.

Edit: Also interesting to note that when biomass is used as a measure of species success, cows are almost twice as successful as humans. Of course, the cow population is dependent on its symbiotic relationship with humans. The biomass of Artic Krill exceeds that of all humans as well. Were only an especially successfully species when when looking at the total amount of energy extracted from our environment, which greatly exceeds the calories stored in our bodies and the energy conversion necessary to hold it there.