Notodoris gardineri is a sea slug, which is a species of nudibranch, a shell-less marine gastropod mollusc in the family Aegiridae.

The gills are situated in the center of the dorsal side, they are yellow and protected by three round lobes.

This nudibranch lives on the external slope or top of coral reefs, commonly at 7 to 15 m depth.

[3] Notodoris gardineri feeds mainly, according to the actual observations, on sponges of the family of Leucettidae as Pericharax heterographis or Leucetta primigenia.

This Notodoris is benthic and diurnal, moves at sight without fear of being taken for a prey.