Nymphon is a genus of sea spiders in the family Nymphonidae. The species within this genus are all benthic organisms found in most major oceans across the globe from the littoral zones to the deep sea, with a strong distribution around polar regions: Arctic and Antarctic waters. Out of the sea spider genus, Nymphon is the most diverse with over 200 species had been described, with a majority of them being found in the Southern Ocean region. This genus may also contain bioluminescent species.

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