They always look that way!It does look look like has been partially digested which makes it look like it has been in a gulls stomach or other bird. So, it could have been disgorged from a flying gull or something.
Ah right, I didn't know that, cannot think I have come across one before.They always look that way!
The lumpsucker has two fins on its belly that have developed to make a suction pad. It spends much of its time stuck to rocks, often where there is quite a tidal flow. The skin is covered in lumps 'n bumps and the texture is mottled and weedy coloured, excellent camouflage for its environment.
Cyclopteridae - Wikipedia
en.wikipedia.org
Nothing becomes quite that ugly without good reason!