You were at beach.It was a sunny day and you were swimming.You sat on the rocky place for recess a little.You felt like being watched and looked around.You noticed a pair of eyes is looking at you.You could only saw half of his head.His whole body was in underwater. You shouted;

"Hey! Who are you?!"

It dives and gets away quickly.You were in shock and you quickly turned back to shore. You decided to forget it..till you saw it captured and chained at the fisherman's hut..