It's been more than four years since the cargo ship Rena smashed into the Astrolabe Reef off the coast of Tauranga in New Zealand's worst ever maritime disaster. Now a coalition of conservationists, scuba divers, recreational fishers and local Maori are campaigning to protect the reef through a temporary ban on fishing within roughly 5.5km of the reef. One of the leaders of the campaign is TA Sayers - he's a marine biologist who whakapapa's to the Motiti Islands and is acting as a technical consultant for the Motiti Rohemoana Trust.