Britain's Prince Harry sits in a class during his visit to Halfmoon Bay school on Stewart Island in southern New Zealand, May 11, 2015. REUTERS/Robyn Edie/Pool

Britain's Prince Harry sits in a class during his visit to Halfmoon Bay school on Stewart Island in southern New Zealand, May 11, 2015. REUTERS/Robyn Edie/Pool

Britain's Prince Harry talks to pupil Tyler Dawson (in blue) after the Prince presented him with a sweatshirt for winning the Southland 100m running race during his visit to Halfmoon Bay school on Stewart Island in southern New Zealand, May 11, 2015. REUTERS/Robyn Edie/Pool

Britain's Prince Harry sits in a class during his visit to Halfmoon Bay school on Stewart Island in southern New Zealand, May 11, 2015. REUTERS/Robyn Edie/Pool

Britain's Prince Harry greets school children during his visit to Halfmoon Bay school on Stewart Island in southern New Zealand, May 11, 2015. REUTERS/Robyn Edie/Pool

Britain's Prince Harry (L) greets wellwishers during his visit to Halfmoon Bay school on Stewart Island in southern New Zealand, May 11, 2015. REUTERS/Robyn Edie/Pool

Britain's Prince Harry sits in a class during his visit to Halfmoon Bay school on Stewart Island in southern New Zealand, May 11, 2015. REUTERS/Robyn Edie/Pool

A woman walks at sunset on western Vancouver Island's Halfmoon Bay beach, near Ucluelet, British Columbia, December 23, 2006. A series of storms have battered coastal areas in the Pacific Northwest over the last month and further severe weather is expected on Christmas Eve. REUTERS/Chris Helgren (CANADA)

A woman walks at sunset on western Vancouver Island's Halfmoon Bay beach, near Ucluelet, British Columbia, December 23, 2006. A series of storms have battered coastal areas in the Pacific Northwest over the last month and further severe weather is expected on Christmas Eve. REUTERS/Chris Helgren (CANADA)