The boy who died at Whanganui's Splash Centre on Monday afternoon has been described as a cool kid with a cheeky grin.
In an online tribute, Whanganui East School said it sent "aroha to the whānau" of Gerrard Williams-Bogileka.
Gerrard has been described as "such a cool kid" who always gave big hugs while being "an amazing friend" to lots of other students.
Hundreds shared their condolences for Gerrard and his whānau and said he would be "missed in the classroom and school by many".
Emergency services were called to the incident around 2pm on July 6 and Gerrard was taken to the Whanganui Hospital in a critical condition.