Hi, It sounds like your tortoise got upside down, urinated to keep himself cool and that white stuff is urates, a by product of protein synthesis, normal in pee and poop for a tortoise. Make sure he has a chance to replenish the liquid he lost by providing water. This is generally the only way it gets on their backs, normally it is on the ground. Don Williams, (Moderator: CTTC Turtle and Tortoise list ; Gopherus; Vets_for_herps; TortoiseNutrition) *--*--*--*--*--*--*--*--* May You Walk in Beauty Don :~)> and his desert torts in Bakersfield, CA. www.Donsdeserttortoises.com http://tortoise-aid.org/ www.KernCTTC.org