Okay, here's a first shot at translating some of the lyrics. I'm not fluent in Humpback like Mr. Spock, so I may make a few mistakes.

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I give her all my krill
That's all I do
And if you saw my gril -- um -- girl
You'd feed her too
And I love her.

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Close your eyes and I'll whistle
Tomorrow I'll miss y'all
I'm off to the Pacific, so blue
And then while I'm away
I'll sing songs every day
And the whales there will sing my songs too

All my whale-songs
I will sing to you
All my whale-songs
Soon you'll sing them too.

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Let me sing my song, cos I'm going to
Barrier Reef
The water's not deep
And nothing to get beached about
Bar-ri-er Ree-eef forever.

Singing is easy with eyes closed
Just hum along with what you hear
It's getting hard to learn new songs but it's all right
That is, I think new whales are here.

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I was alone, I took a swim,
I didn't know what I found find there
Another pod, where maybe I
Could learn a new melodic line there
Ooooh, then I suddenly heard you
Ooooh, I'll be singing the words you sang
Every single day of my life

Got to learn new songs in my life!

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That should be enough for now, to give you some idea of what those whales are doing with our favorite Beatles classics.

Alex