In the animal kingdom who has the most chance of being the most dominant?

Question

in land and in water

Answer 1

Without technology, the most dominant animal would probably be fire ants, and in water probably an apex predator like a giant squid, with technology, man will always dominate nature's animals.  

Answer 2

water is more dominant because they have a larger environment.

Answer 3

define dominant...

unstopable?

greatest numbers?

flys on land

krill in water

Answer 4

the man