The player must have spoken to the "Huntmaster" in Phon Coast and defeated Thalassinon and spoken to one of the three bangaa outfitters, which will trigger the start of the Rare Game quest. It then has a 40% chance of spawning among the Adamantitans in the Feddik River (three-way split area) area of the Cerobi Steppe.
The best idea is to stealScarletite from it, then leave the area without killing it, as once killed, Aspidochelon will never respawn. That way the player can get more than one Scarletite from the rare game. Scarletite is an essential Loot item in the making of the Tournesol.
[view·edit·purge]According to the tradition of the Physiologus and medieval bestiaries, the aspidochelone is a fabled sea creature, variously described as a large whale or vast sea turtle, and a giant sea monster with huge spines on the ridge of its back.