My scary swimming experience

1.One day around 2011,maybe,i was swimming with my siblings and my cousin,suddenly my goggles fell into the water and it sinks in the deep side of the pool but i was to scared to take it so i told my sister to take it for me,then after she went down and get my goggles back she ask for help that time i was with my cousin Audadi,then me and Audadi gave our hand and grab her but before i grab my sister i saw another hand from the other side of the pool i was super scared because there is no one there.After i grabbed my sister i went up and see if there is somebody there or not,so i checked and no one is there it's just us in the middle of the pool while my other siblings and cousins are swimming in the other side of the pool.I was so scared then after i relaxed i asked my sister and Audadi if they saw the hand but they said that they didn't saw it,so i never went to the middle of the pool again