This video is from 15 years ago, excuse the resolution.
I was very lucky to find these critters, they live 2000-3000' down in the Monterey canyon.
Introducing; 2 types of Ctenophora, Lobata (lobed) and Beroida. (flatter)
Siphonophores, in long chains, straight (one must have been 100' long) and curled.
Salps are barrel-shaped and are usually grouped in rings
And much, much more, enjoy
Jeff