More than 150 people gathered on the Mount main beach to draw a line in the sand and protest against any future use of Corexit.
Mount Maunganui surfer Dominico Zapata organised the protest which was held on Saturday.
Corexit is an oil dispersant and was used in the Rena clean up.
It has been linked to deaths and serious illness in America following the 2010 Gulf of Mexico oil spill and is currently stockpiled in drums at the Port of Tauranga.
"As soon as I knew they were using it on the Rena, I was concerned, especially because of the tide, wind, ocean currents and wave action, we don't actually know where that Corexit has ended up," Mr Zapata said.