Figure 1: Key jaw anatomy of a rorqual lunge, shown in a fin whale (Balaenoptera physalus).
a, Jaw in oblique view. b, Laterally extensible, accordion-like VGB. c, YSF embedded in the VGB of an adult fin whale, demarcated by arrows and digitally enhanced with a low opacity mask. ma, mandibles; me, mental foramina; so, sensory organ; vib, vibrissae. Art by C. Buell.
Subject terms: Organismal biology; Zoology; Palaeontology; Animal behaviour
Discovery of a sensory organ that coordinates lunge feeding in rorqual whales
Researchers Identify New Sensory Organ in Whales : http://www.sci-news.com/biology/article00340.html