Without a photo it would be difficult to tell, but it could be a sea cucumber, which is cucumber shaped and purple. It's not a jelly, and usually has five rows of orange feet along its length.
NO
No.
red sea
it is jelly
Chrysaora
californian coastline
No jellyfish of any color, stripe or polka dot has hooves.
what is the bodycovering of a purple striped jellyfish
sea turtle
Pelagia Noctiluca
Well, since jellyfish are all JELLYFISH that is a way they can be related, but otherwise, some are blue, and some are purple.
sharks probably