Unsettled weather and sea conditions have taken a toll on some Auckland-based snorkellers this summer.
At Cape Rodney-Okakari Pt Marine Reserve unusual ocean currents have kept water temperatures round a chilly 20C and visibility was diminished following last year's storms and the recent king tide.
Kwinten De Vos, the manager at Seafriends - which equips groups of snorkellers visiting the popular Goat Island reserve - hopes more settled weather will bring improved conditions over the next few weeks.
"We have certainly had some good days but we have also had some school groups cancel out completely, for example following the king tide at the weekend," he says.
More than 200,000 visitors a year are drawn to the reserve by the abundance of fish, which have flourished during 35 years of protection from fishing.