spine skulls
 

I have this quest to kill 6 spine skulls Have no idea where they might be went to the island with the davy jones crew but I did not see any spine skulls.

spineskulls are on davy jones crew and are on Isla Tormenta u just have to search around a bit, there is usually 1 in the front (enter though the far left cavern entrance) if he is not there kill the dregs and flotsams that are there.
NOTE: Spineskulls use grenades so choose a weapon up close so when he throws them at u he gets hit himself

Thanks for the info.

no problemo

Is this a quest you got from the bar lady?