Those who have volunteered to help mop up the oil are giving up more than just their time.
Shane Wasik is selling his "once in a lifetime opportunity" to see the All Blacks' Rugby World Cup semifinal.
"It's pretty much 24/7 at the moment ... it's pretty disappointing that I can't go, but I can't not help here," he said.
The 30-year-old lives opposite the beach at Mt Maunganui and is the president of the New Zealand Underwater Association, a local diver, underwater photographer and marine biologist.
On Friday, Mr Wasik joined the Rena crisis team and dived for two days collecting data on the reef and marine life because it would "never be in the same condition again".