This is not an unusual event! The tortoises simply love bathing, and it’s good for them as it hydrates and cleans without drying them out. I dangle a carrot afterwards and they are ravenous, abit like humans after swimming. What I will add is that I use warm water from the tap, and once it has cooled they are keen to get out, so if I pour more warm water all over their shell, they sit and bathe to their hearts content. What a delight!