Pacific Sea Nettle (Chrysaora fuscescens) — note the golden brown color (beware, sea nettles can cause painful stings)
Moon Jelly (Aurelia sp.) — note the pale purple color
Now, two different hydromedusae:
Giant Bell Jelly (Scrippsia pacifica) — note the red eye spots
Aglauropsis aeora — note the faint pink and blue coloration
And the swimming bell of a siphonophore:
Probably Praya sp. — note that in this species the "jelly" material retains its form, and overall this swimming bell has a shape somewhat like a large tooth, i.e., squared off at one end and with two pointed tips at the opposite end.
P.S. I think I've written a little bit about all of these species before, so if you'd like to learn more about them, scroll to the bottom of the NHBH web page and use the "Search This blog" function.