Would it not be ironic if we landed a probe to dig up one of the icy moons and found a civilization of water breathers?
Those moons have been around as long as the earth has been, the icy outer crust has protected the oceans under them at least for a billion years, if not more.
Plenty of tiem for life to develope & progress - it may even be possible that they may be more advanced than we are, considering that humans have not been around as long as we as a spiecies have been trying to destroy each other over the millenia with wars, racism, & corporate greed.
If they've been quiet they're wise and merely biding their time until we make the first move and discover them.
Its ironic that our world would be the ideal place to take over, since it is a water world.
QUICKLY EVERYONE! POLLUTE OUR OCEANS!
Naw, actually this sounds pretty awesome. I don't want to be "invaded" per se, but I'd love for our planet to become a tourist spot for posh europans looking to enjoy their golden years.
We could build little swimming pools and charge the aliens exorbitant fees to sit in them, then we could bring our kids in to watch them and charge them even more money. Monopoly ho~!
(We'll figure out the whole disease thing later; for now money.)