Cosmic Jellyfish: 2017 American Samoa

This spectacular little jelly was imaged during our first dive on ’Utu’ seamount, on February 21. The jelly (hydromedusa) is in a family of hydromedusae called Rhopalonematidae, which is known for the canals running vertically on the inside of the bell, gonads attached to these canals, and sometimes having two sets of tentacles. Scientists have seen this species on previous Okeanos Explorer expeditions. In this video, you can see the perfectly relaxed arrangement of the two sets of tentacles; scientists t