title: Felimare ruthae
text: # Felimare ruthae
  
  Felimare ruthae is a colourful species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.
  
  ## Distribution
  
  This nudibranch is known from the Caribbean. and the Gulf of Mexico.
  
  ## Description
  
  Felimare ruthae has a blue-black body with a yellow-lined mantle and yellow longitudinal lines and bright-blue striations on its dorsum. The gills are typically translucent outlined with black and the rhinophores are black with a yellow-white line running vertically.
  
  This species can reach a total length of at least 25 mm and has been observed feeding on the sponge Dysidea etheria.
  
  ## Habitat
  
  Minimum recorded depth is 1 m (3 ft 3 in) and maximum recorded depth is 12 m (39 ft).
  
  