02/12/2026
🥚 Moeraki Boulders – The Giant Spheres of Koekohe! 🇳🇿
Scattered along the shoreline, these boulders range in size from half a meter to over 2 meters in diameter, with some weighing several tonnes. They are so smooth and round that many people find it hard to believe they were made by nature.
The Legend of the Shipwreck: Māori Folklore 🛶🌟
According to local Māori tradition, the boulders are not rocks at all:
The Legend: They are the remains of eel baskets, gourds (calabashes), and kūmara (sweet potatoes) that washed ashore after the legendary voyaging canoe, Āraiteuru, was wrecked at nearby S**g Point hundreds of years ago.
The Canoe: The rocky shoals extending into the sea are said to be the petrified hull of the canoe, while the boulders represent the spilled cargo turned to stone forever.
The "Pearl" of the Sea: How it Formed 🌊🐚
Despite looking like alien eggs, science has a fascinating explanation:
Septarian Concretions: These were formed on the seabed about 60 million years ago (Paleocene Epoch).
The Growth: Much like how a pearl grows inside an oyster, minerals (mostly calcite) built up around a central core (like a shell or a fossil) in the marine mud.
The Time: It is estimated that the largest boulders took 4 to 5 million years to grow to their current size!
The Reveal: They were originally trapped inside the cliffs behind the beach. Over millions of years, coastal erosion washed away the soft mudstone, "birthing" the boulders onto the sand.
