New Zealand’s legal sea floor
Polymetallic nodules
New Zealand’s deep-water mineral deposits
Underwater vents
Black smoker hydrothermal chimney (1 o 2)
Minerals in a black smoker chimney (2 o 2)
Production of mineral sediments
Chatham Rise
Phosphate nodules
Topdressing on high-country pasture
Mining ironsands, Taharoa
Coastal dredging
Sand dredge, Pākiri Beach