Bionis' Interior - they can be found on every spawn point. The following locations have the highest spawn rate (18%) for Blood Worm: * Second Lung (three spawn points scattered in the area) * west of Vein Crossroad; look for the dead-end * Terminal Vein; look for the dead-end * the lone elevated platform south of the Spinal Nerve Tower in the vicinity of the fire elemental Ether deposit; the area is only accessible by jumping off from high ground * northwest of the Heart Entrance; look for the lone spawn point * south of Terminal Vein; look for the large circular platform with a puddle of water * Venous Plexus; look for the puddle of water * west of Terminal Nerve Tower; the passage is guarded by the Ghostly Mahatos * northeast of Terminal Nerve Tower; loo