[Fred Nerks]

...if the supply of insects were constant, and if better adapted competitors did not already exist in the country,I can see no difficulty in a race of bears being rendered, by natural selection, more and more aquatic in their structure and habits, with larger and larger mouths, till a creature was produced as monstrous as a whale...

Or a vacuum cleaner...

[SunkenCiv]

Same process led to the same result on a Dyson sphere somewhere. /rimshot!