Crab ganglia. Compare the size of the dorsal ganglion (A) with that of the ventral ganglion (B) from a scarlet king crab, Lithodes couesi. Image courtesy of Exploring Alaska's Seamounts 2002, NOAA/OER.
Crab ganglia. Compare the size of the dorsal ganglion (A) with that of the ventral ganglion (B) from a scarlet king crab, Lithodes couesi. Image courtesy of Exploring Alaska's Seamounts 2002, NOAA/OER.