When Te Whanganui-A-Hei (Cathedral Cove) Marine Reserve, where all marine life is protected. Also located in the reserve: the Cathedral Cove (photo). A walking track exists from the northern end of Hahei Beach, and it is also possible to walk from between Hahei and Gemstone Bay. North - north-east of North Island (Coromandel Peninsula, close to Auckland), NZ.
I'd like to jump into these azure waters in the Urupukapuka Island in the Bay of Islands of New Zealand. The waters around the island are clear and diving is particularly good on the east coast where there is plentiful reef life.