Swimming in school

Evan's school had swimming lesson for them since long time ago but bcos of HFMD they only started having it more regularly since few months back. Evan had improved a lot since then, he used to cry and refuse to enter e pool...Today I was there to see him swim for the 1st time... When the instructor "pull" him around the pool, he was whining... keep saying he dun wan..

But when left alone with his friends, he enjoyed the water so much... he will just walk around the pool on his own and putting his head into water....He is not afraid of water but just dun understand his behaviour...maybe he just dun wan to learn how to swim, only wan to play....