The Aliens came from a far distant world in a large yellow ship that blinked as it twirled. It rouded the moon and entered our sky. We knew they had come but we didn't know why.
Bright the next morning with noisy commotion the ship slowly moved out over the ocean. It lowered a tube and drained the whole sea for transport back home to their Galaxy.
The tube then sucked up the clouds and the air, causing no small amount of Earthling despair. "Help us! Please stop!" was the public outcry.
A hatch opened up and the aliens said,
"We're sorry to learn
That you soon will be dead,
But though you may find this slightly macabre,
We prefer your extinction
To the loss of our job."