can you own an ocean

This may be of interest to you:

http://geography.about.com/od/politicalgeography/a/politicaloceans.htm

You sure can.

Tell me which one you'd like and we'll do a deal.

Surveying costs and title insurance could be a problem, not to mention
the neighbors.

Yes, I claim Corio Bay near Geelong and Torquay's Fisherman's Beach as
my very own but I'm very generous and let others use them too.

The Brits "owned" most of them in the 19th century.  The price is
continuous, high, and risky.

Red Beard the pirate does.  He's owns all the oceans.  Harrharrhrarr.

Oh no, shanewbe-ga, I do so wish that you hadn't made your disclosure.

Everyone will now suspect that I'm the pirate formerly known as 'Red Beard'.

Grey Beard the Pirate

(For our colonial friends: 'grey' is the correct way to spell 'gray'.)

Well, dear, that depends on how much money you have, what sort of
connections you have, and what type of drugs you are on.

If you look at the globe, I'm pretty sure they are all claimed as
International Waters. You are welcome to go out in a boat, stick a
flag in the water and claim it, but I doubt anyone would care.

Sorry. But seriously, I'm pretty sure they are all taken. If you
discooooooovered one, you might get to keep it.