How about a bit more info for WO Polaski .....
Originally posted by C. C. Cowgirl!
[b]Aren't the Tyranids so many that they can smother an entire planet in sheer numbers? [/B]
They can get enough biomass to make quadrillions more Tyranids, just from one planet, and they consumed entire galaxies... so they number into the quintillions most likely.