The Plagued Coast

To find a cure for the plague we need to understand how it affects different creatures, from the most complex life forms to the lowliest subspecies.$B$BI've come here to study the murlocs since, like us, they've retained free will in undeath. What makes these lowly mongrels so special? I need to find out, $N!$B$BTravel northwest and bring me their spines so that I may study the accumulation of plague in their marrow. Who knows what secrets their little bones hold?