Hot water beach in New Zealand is located on the North Island in the Coromandel region. There are two hot springs located right on the beach underneath the sand. During the low tide many people come to this beach and dig themselves a natural spa in the sand which is filled immediately with hot water from the springs. This is such fun! It is also a social experience as you meet many people there. You can also rent a little shovel in the nearby store to aid you with the digging. But one movie worth a thousand words. Here is what I have found on you tube: