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Jelly | by NOAA Ocean Explorer
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This beautiful hydromedusa was seen at about 3,900 meters depth during the fourth dive of the Oceano Profundo 2015: Exploring Puerto Rico's Seamounts, Trenches, and Troughs expedition on NOAA Ship Okeanos Explorer. Clearly imaged are two sets of tentacles: an inner ring of short tentacles and a longer set of tentacles originating from the bottom edge of the bell. Red canals running from the edge of the bell to the top of the bell and uniquely shaped gonads suggest placing this medusa in the genus Crossota.


The Okeanos returns to the region on October 30, 2018, for another exciting expedition.


Image courtesy of the NOAA Office of Ocean Exploration and Research, Exploring Puerto Rico’s Seamounts, Trenches, and Troughs.


To learn more about the 2015 expedition, visit:


For more about the 2018 mission, visit:



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Uploaded on October 25, 2018