Figure 1

Crangon colour. Chromatosome pigments in exopod (part of the tail fan) of Crangon crangon (A); transparent larva of C. crangon with visible chromatosomes (B); physiological variation in C. crangon colouration in response to different coloured background: the same individual was photographed after having been placed on white (C) or black (D) backgrounds.