Blobfish are found in depths, where very much a high pressure. The jelly-like flesh of blobfish is little bit less than water; it allows fish to float above a sea floor, not spending energy on swimming.
Blobfish don’t need muscles - it sit and wait for something edible to go by or swallow of all that will get before it.
There are some video, but i don't know is this fake or not...
and some very fun video of blobfish =)
see also most loveliest animal