Debris and oil weighing 35kg washed up on Bay beaches after last weekend's tropical storm.
The pollution happened after Rena's stern changed position on the Astrolabe Reef.
The revelation comes a day after the Bay of Plenty Times revealed that Mount Maunganui Main Beach was voted one of the top four beaches in the South Pacific, and as activists gathered at Mount Drury to launch a petition calling for the wreck's removal.
Bay of Plenty regional Council senior communications advisor Linda Thompson revealed yesterday that Bay of Plenty Regional Council received complaints from beach walkers about oil on the beaches. She said before tropical storm Lusi the last time someone had reported oil on Bay beaches was October or November last year.
Regional council environmental management general manager Eddie Grogan said 20kg of oil and debris was picked up on Mount Main Beach and another 15kg on Papamoa Beach by Envirowaste.