I'm two words long and have one "u".
I love to move around.
I'm very much invisible,
Even when I am found.
I'm almost always in the light,
So rarely in the dark.
And even if I'm in your yard,
Your dog will never bark.
The bitter cold is not my friend,
So I stay far away.
While you can find me where it's warm,
I must be on my way.
You will not catch me going east.
It's not my cup of tea,
But I go north and west and south.
That's good enough for me.
I'm in the water every day,
When I'm not on the land.
The sharks and storms don't bother me
If they get out of hand.
Volcanoes, tsunamis, earthquakes-
They don't scare me away.
But if I see a crab or goat,
I'll go the other way!