Appearance
Desmonema gaudichaudi is characterised by a bell that typically measures 10-20 cm in diameter, though specimens up to 50 cm across have been recorded. Bell coloration is variable, ranging from pale hues with dark spots to uniformly maroon, brown, or violet shades. The margin of the bell bears 32 lobes (lappets), with tentacle clusters that usually consist of five to seven tentacles arranged in a single row.
Internally, the species displays a few broad radial canals branching from the stomach to the bell margin, with lateral canals often exhibiting unilateral branching. It also features four long oral arms used for prey capture and transport to the central mouth.

