[1][2] 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.

[3] Out of the sea spider genus, Nymphon is the most diverse with over 200 species had been described,[4] with a majority of them being found in the Southern Ocean region.

The Nymphon genus has been commonly found in waters of higher latitudes and is associated with polar regions and having a more circumpolar distribution than other genus of sea spider.

[7] In relation to the benthos, mainly inhabit marine fauna and are often found around sessile communities.

[8] Generally, it is thought that Nymphon feed on hydroids, actinians, bryozoans, molluscs, annelids, crustaceans, and detritus.