The Archelon is passively tamed in aquatic areas, often near jellyfish, by feeding it Superior Kibble or Bio Toxin from behind after clearing nearby threats. It serves as a durable transport and combat mount with strong carrying capacity, aquatic mobility, stun resistance, and a saddle that supports underwater exploration without scuba gear; it also gathers Biotoxin and passively produces algae for taming and consumable uses. When confronting one, target its head and fins to bypass its damage reduction, avoid relying on torpor, and watch for other aquatic creatures joining the fight.