Two artillery shells were discovered on Waikanae Beach, Kāpiti Coast, on Friday, 12 September 2025. The items appeared heavily corroded and were quickly cordoned off by police. A New Zealand Defence Force Explosive Ordnance Disposal team later made them safe at low tide, with no injuries reported.
Discovery on the Kāpiti Coast
A local dog-walker first noticed the metal cylinders partially buried near the high-tide line. The dull olive colour and flaking rust looked unusual, prompting an immediate 111 call. Within minutes, Kāpiti police arrived and pushed people back from the water’s edge.
Officers described the objects as roughly half‑metre long and sharply tapered at one end. Their condition suggested they had been exposed to the sea for a long time. Recent swells and winter erosion likely shifted the sand and revealed them.
Rapid response and controlled detonation
Specialists from the NZDF EOD unit travelled from Trentham to assess the find. After an on-site inspection, they established a 300‑metre exclusion zone and waited for the ebb of the tide. The team opted for a controlled detonation in place to minimise handling risks.
Witnesses reported a single dull thump, followed by a tight spray of water and sand. The blast was carefully calculated to reduce fragmentation hazards. “We believe these were historic munitions, likely moved by recent storms,” said Warrant Officer Jamie Russell, the EOD team leader. “If you see anything that looks like a shell, do not touch it—call 111 and keep clear.”
Why old munitions still surface
Kāpiti’s coastline carries layers of wartime history. During the Second World War, nearby Paekākāriki hosted US Marines who trained along the beaches and dunes. Live‑fire exercises and offshore practice sometimes left ordnance that later migrates with shifting sands.
Decades of salt, impact, and corrosion can make old shells highly unstable. A harmless‑looking relic can still contain sensitive explosives. Heavy rain, king tides, and coastal erosion frequently unearth items long buried from view.
Public guidance and safety
Authorities issued clear advice for anyone who encounters suspicious objects along the shore. The guidance is simple, and it saves lives:
- Do not touch, move, or disturb the item under any circumstances.
- Note the location from a safe distance, using a landmark if possible.
- Keep people and pets away, and avoid using metal tools nearby.
- Call 111, ask for police, and describe what you can safely see.
- Wait for authorities to arrive; do not return to the item or let others approach.
Senior Sergeant Mia Thompson of Kāpiti Police stressed the point. “We urge everyone to leave suspicious finds alone and let trained specialists handle them. Your caution helps keep the community safe.”
Community reaction and beach access
Beachgoers praised the swift cordon and steady communication from responders. Families were guided to safer vantage points while the team worked. Most of the foreshore reopened by evening, with a short section remaining taped off for follow‑up checks.
Kāpiti Coast District Council crews posted temporary signage warning about unstable dunes and debris. Council staff also coordinated with DOC to limit wildlife disturbance during the operation. Surf‑lifesaving volunteers helped direct foot traffic and kept swimmers informed.
What investigators will look for next
EOD and police plan a targeted sweep of nearby dunes and channels to ensure nothing else remains. The survey may include magnetometer scans and visual walkovers at low tide. If additional items are found, they will be secured and dealt with promptly.
Officials will review recent storm patterns and erosion hotspots to refine public alerts. Education signs at popular accessways may be updated to include ordnance safety tips. Schools and local clubs could receive briefings ahead of the busy spring season.
A timely reminder for coastal visitors
This incident offers a practical reminder that our beaches can hide surprises. Most walks end only with sand on your shoes, but vigilance still matters. If something seems out of place, trust your instincts and keep your distance.
Authorities thanked the original caller and the cooperative crowd for their calm response. With quick reporting and expert intervention, a potentially dangerous situation was resolved safely—and the beach is open again.
