Sepia is a variety of this 3-letter defensive secretion produced by cephalopods
The blood is pumped by three separate hearts: two 
branchial hearts pump ... To produce these signals, cephalopods can vary four 
types of... [DOC] [TLE] Neuropeptidome of the Cephalopod Sepia officinalis: Identification ... [PAR] Dec 3, 2015 ... Cephalopods exhibit a wide variety of behaviors such as prey capture, .... Each 
sample produced an average 35 million raw 150-bp paired reads.