Alex Mustard / Red eye medusa (Polyorchis penicillatus) with hitchhiking amphipods (Hyperia medusarum). Browning Pass, Vancouver Island, British Columbia, Canada. North East Pacific Ocean.

Alex Mustard,Alex Mustard / Red eye medusa (Polyorchis penicillatus) with its feeding tentacles extended to catch planktonic prey. Note that the bell of the jelly has hitchhiking amphipods (Hyperia medusarum). Browning Pass, Van...

Norbert Wu / Jellyfish (Diplulmaris antarctica) with several Amphipods (Hyperiella dilatata) bell can reach 18 centimeters, Medusa provides amphipods with protection and mating platform, Antarctica

Alex Mustard / Red eye medusa (Polyorchis penicillatus) with its feeding tentacles extended to catch planktonic prey. Note that the bell of the jelly has hitchhiking amphipods (Hyperia medusarum). Browning Pass, Van...

Norbert Wu / Hyperiid (Hyperia medusarum) rides on long muscular gut of Jellyfish (Sarsia sp) and steals food, Arctic

Shane Gross / Three Amphipods (Hyperiidae sp.) clinging to a jellyfish, Vancouver Island, British Columbia, Canada, Pacific Ocean.

Shane Gross / Amphipods (Hyperiidae sp.) clinging to a jellyfish, Vancouver Island, British Columbia, Canada, Pacific Ocean.