At first glance the Modest Cadlina resembles the Yellow-Edged Cadlina, but it lacks the obvious yellow marginal rim of the latter.  Both feed on sponges and  both tend to have rhinophores and gills that have a yellowish-brown tinge.  The Modesta cadlina is rarely spotted as it is fairly small (to 35 mm or just over an inch) and it lives and feeds in the shallows.  These individuals were found under the crevice of rocks at the edge of the low intertidal zone off of Roes Islet, Pender Island, B.C.   Initially, these cadlinas may also be mistaken for the Hudson’s or Nanaimo Dorid but both of these nudibranchs have significantly longer rhinophores and tubercles.