Gene splicing with animals

You decide to volunteer as a participant in an experiment for gene splicing. You get to choose what animal's genes you want your genes to be spliced with.

Example: Splicing with fish - You grow gills

Splicing with an eagle - You grow wings under your arms

What animal would you choose? What trait or ability would you want to acquire from getting your genes spliced with that particular animal?

probably a shark so I could breathe and see under water.I would also have sharp teeth

Bat, echolocation