"Part of the make-up of the traps is there's netting in them that sections them off internally, and in the fire place over there was just ash and netting."
Department of Conservation field centre supervisor Dale Tawawere said everyone was in a state of disbelief over such a "selfish act of vandalism".
"The trust work incredibly hard and this will certainly set their restoration programme on Whareama Peninsula back. The kind of vandalism demonstrated here is of a serious nature and is not acceptable."
The trust would have to seek more funding to replace the traps, many of which were paid for by a Hawke's Bay Regional Council grant. Hundreds of volunteers had also donated their time to setting and checking the traps, including schoolchildren.
"The biggest message we want to get out is that the area is very remote and can only be accessed by boat. It must be people who are familiar with the area and have maybe been using it for hunting.
"We are hoping that someone recognises that they knew people who have been out there hunting recently and do the right thing."
The trust, which worked alongside DoC, would seek more funds when the extent of the damage was known: "But you never know, someone might win the big Wednesday and buy us some new traps."
Contact the Wairoa Police with any information: (06) 838 8345.