Well, first of all, I don' like this at all:

Lets try to stick with short, clear, ONE word names.

Then, what is whale?
A huge, no doubt the biggest living creature in todays world. Nothing can be bigger, right?
And this is just fine on HIVE.

But...
According to the calculations by taskmaster4450 in his great article, we see this "whale level" on Leo is a modest 8124 LEO.
Seriously? Nothing can be bigger?
One with deep pockets can get 10 times as big in just one week (nowdays), and after NOV-10, after wLEO starts - maybe in one day.

I made a quick check on Leo's rich list - found 89 accounts holding now more than 8124 Leo.
That is almost 1.5% of all registered Leo users, and 10-15% of all active..
Please note, that there are MOST LIKELY a few more, as those holders who keep their large active SALE orders on HE - are not encountered on the rich list.

So 1.5% in the ecosphere are whales? I'm sorry, but I can not understand this, nor justify.

In general, I like the idea of staying away from sea type creations.

LEO is a cat
And this is fact. So seems logical to have our level names from cat's pedigree. This is a cat's world.
Can we enrich this all with a few bits of mythology? Why not? Why not a flying cat?

I google'd a bit this morning, and look what I found about "beasts" on planet Pandora

IKRAN:

and this, TORUK:

source

As Jake Sully said:

TORUK is the baddest cat in the sky. Nothing attacks him. So why would he ever look up?

So I came out to my version:

The planet of LEOFINANCE:
Hundreds of Lion's control the land, ~100 or so of flying cats IKRAN's watching the planet from the air, and a few of those TORUK's, who don't have ever to worry looking upsides.

Nothing can, even theoretically, be bigger, as you see ( 812471 x10 = 8.1 mln LEO's. Impossible)

Now, it's your turn.
Criticize !