I don't like and wouldn't use Earth,
Sky, or
Ocean. I would think of them as girl names.
Nature names I like . . .
Aurora (means dawn)
AutumnOpal (does that count?)
RoseSusannah (means lily)
"For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life."
~~~
John 3:16