Photos by Northland's top underwater couple are again among the standout entries in a competition organised by the National Institute of Water and Atmospheric Research (Niwa).
Every year, Niwa invites its staff around the country to submit their best photos from the previous 12 months, and every year, images by Ngunguru-based Irene and Crispin Middleton feature among the winners.
Irene's photo captures her husband observing a female jewel anemone releasing eggs during a mass spawning event.
The rarely-seen natural phenomenon occurs only once a year - just after the full moon in mid-winter - so getting the shot required a lot of planning.
The bright pink anemones were growing on the wreck of HMNZS Canterbury (F421), about 25 metres down in the Bay of Islands' Deep Water Cove.