World oceans in a nutshell!

Here's an interesting site I just came across that's entitled "The World's Biggest Oceans and Seas." It starts with this rather unusual satellite picture:



and continues with pictures and explanations of the top ten: The Pacific, Atlantic, Indian, Southern, and Arctic oceans, and Arabian, South China, Caribbean, Mediterranean, and Bearing Seas in reverse order. I have never seen them being presented all together with pictures like this before. I find it is very informative and educational for me. I just can't help wondering at any given moment, how many freaque waves might be happening in all of these bodies of water? How can we ever make a concerted effort of measuring any of them? If we don't measure them, how can we ever really know what is going on out there?