http://deepblue.lib.umich.edu/bitstream/handle/2027.42/51533/Oldfield_Stingrays_2005.pdf?sequence
P Predation New Member Oct 30, 2014 #1 http://deepblue.lib.umich.edu/bitstream/handle/2027.42/51533/Oldfield_Stingrays_2005.pdf?sequence