Smithsonian Report. 1960 — Nice 



Plate 3 



1. Conib-jellies (ctenophores, Pleurobrachia), brightl}' luminous denizens of ihe plankton, 

 often occurring in swarms. Light appears as flashes along the radial combs which run 

 from top to bottom of the animal. Size, 2 cm. 



2. The paddleworm Chaetopterus. This animal lives in a parchment tube on the sea bottom 

 and discharges a luminous cloud when disturbed. Length, 10 cm. 



