Juvenile jellyfish, Chrysaora (Pelagia) colorata. Purple-striped Jellyfish Phylum Cnidaria ; Class Scyphozoa; Order Semaeostomeae; Family Pelagiidae; Chrysaora colorata has a relatively limited range primarily off the coast of California. Purple-striped jellyfish are a popular species for display at public aquariums, but these captive individuals never attain the spectacular dimensions or coloration of their wild counterparts. Older specimens usually have very distinct purple pigment patterns