New Zealand's biosecurity and marine-environment rules are among the world's strictest. Here's what you can't take ashore, why ships must arrive with clean hulls, and the wildlife-viewing and discharge rules in sensitive waters.
Cruise passengers cannot carry fresh fruit, vegetables, most meats, honey, flowers, seeds, or prepared meals (including sandwiches) off the ship into New Zealand. Anything made of plants or wood, plus used outdoor and hiking gear that may carry soil or seeds, poses a pest risk and must be declared. The simplest approach is to eat ship-provided meals ashore and buy any food locally, or leave doubtful items on board.
Every passenger or crew member going ashore must complete a New Zealand Traveller Declaration (NZTD), covering all food, animal products, and plant material. MPI inspectors board the vessel, review documentation, and examine risk items and baggage as part of clearance. Since October 2023, cruise lines carrying 20 or more passengers must also brief travellers on biosecurity before arrival. When in doubt, declare the item for inspection rather than risk a penalty.
New Zealand's isolated island ecosystems and primary-industry economy are highly vulnerable to introduced pests and diseases, so its border rules are among the world's toughest. Failing to declare or dispose of a biosecurity risk item carries an instant infringement fine of NZD $400. Deliberate concealment or serious breaches can lead to prosecution, fines up to NZD $100,000, and imprisonment of up to five years.
Under the Craft Risk Management Standard for Biofouling, in force since May 2018, all vessels must arrive with a 'clean hull' and provide evidence of biofouling management, since roughly 90 percent of marine pests arrive on ships' hulls. Biosecurity New Zealand inspects for organisms such as mussels, barnacles, tube worms and algae, and can order non-compliant vessels to leave and clean before returning.
During the 2022/23 season several ships were refused entry to sensitive areas for excessive hull growth. Princess Cruises' Coral Princess was denied Milford Sound over snails, Viking Orion stayed at sea for days, Regent's Seven Seas Explorer deferred arrival over algae and barnacles, and Cunard's Queen Elizabeth had to skip Fiordland and Dunedin. Affected ships were given restricted access to commercial ports while arranging approved hull cleaning.
All whales, dolphins, seals and sea lions are protected under the Marine Mammals Protection Act 1978, and DOC rules govern how vessels behave near them. Boats must keep at least 50 m from whales (200 m from a mother and calf), stay 20 m from hauled-out seals and sea lions, travel at idle or no-wake speed within 300 m, and never circle, cut through or obstruct animals. No more than three vessels may be within 300 m at once, and swimming with whales is prohibited.
Under the marine pollution regulations, untreated sewage cannot be discharged within 500 m of shore or marine farms, within 200 m of a marine reserve, or within 500 m of a mataitai reserve. Fiordland receives special protection: in its internal waters no garbage, ballast or grey water may be discharged, and tenders must be free of hull fouling. Vessel numbers in Fiordland's waterways are also limited, reflecting strong sustainability expectations.