jellyfish swimming in a downward pattern

america animal aquarium bay beautiful bell bright california chrysaora cnidaria coast coastal colorful common deep downward floating freefloating freeswimming fuscescens gelatinous jellies jellyfish locomotion marine monterey multiorgan nettle nonpolyp ocean oldest pacific pattern phylum prey pulsate scyphozoan sea shaped sting stinging surface swimming tentacles trailing umbrella usa west worldwide