オワンクラゲ
"Phacellophora camtschatica" primarily feeds on "Aurelia aurita," "Aurelia labiata, Aequorea victoria" and "Pleurobrachia bachei." However, these species have been known to host symbionts that will transfer onto "P. camtschatica" when the host is consumed. This is possible because the sting of this jellyfish is weak therefore allowing many symbionts/parasites including small crustaceans like larval crabs ("Cancer gracilis") and some Amphipoda ("Hyperia medusarum)" to regularly ride on its bell and even steal food from its oral arms and tentacles.