Why do deep-sea fish look like aliens?

Psychrolutes marcidus - Wikipedia

Enter the Ugliest Fish in the Sea the Blobfish

What Do Blobfish Look Like Underwater? - American Oceans

Ugliest Fish in The World

When a blobfish is - South Florida Wildlands Association

Pixel Petz on X: Did you know the blobfish isn't supposed to look like that? Under normal pressure in their natural habitat, they look rather like a normal fish. The blobby appearance

This Blobfish Is the World's Ugliest Animal

The World's Ugliest Animal blobfish looks ugly when out of water because of its low-density flesh. Under the deep sea the fish looks normal because the pressure compresses it to normal state.

Blobfish with and without water pressure - 9GAG

15 Coolest Deep-Sea Fish, Ranked