Alas, I am a Tetrapod

Several hundred million years ago, my distant ancestors crawled out of the sea to begin their life on land.

And now I I'd like to know,

How do I crawl back in?

ramble-tags: would like to know, how to spontaneously aquire ability to breathe water, to be clear, I don't think this would solve my problems, so much as substitute entirely new ones, but at least they'd be super cool ones