In Life of Pi, we can see the changes in Pi's physique like being slim, lengthening of his hair etc. But surprisingly he is clean shaved in that state too. How is that possible? In his age, as shown, he should have facial hairs i.e. moustache and beard. Is there any explanation for this?
Pi is only 16 years old during the course of the story, and not every 16 year old boy has facial hair.