Seals. Hundreds of them bask in the sun at Turakirae Head Scientific Reserve. This coastal treasure on New Zealand’s North Island is more than just a pretty view. It is a living record of earth’s awesome power.
Welcome to Turakirae Head. This promontory lies where the Remutaka Range meets Palliser Bay. Here, the land tells tales of ancient earthquakes. It also shows nature’s resilience.
About 7000 years ago, seismic events started shaping this landscape. Earthquakes caused the land to rise from the sea. This created a series of marine terraces or raised beaches.
Look around you. You can see these terraces. Each one marks a past uplift. The most recent was in 1855 during the Wairarapa earthquake. That quake lifted the land here by over six meters.
Before 1855, this area was the swash zone. The swash zone is where the waves hit the beach. The earthquake pushed the sea out. This started the formation of the newest storm ridge.
What are storm ridges? During storms, powerful waves throw gravel onto the beach. This creates long ridges. Bigger storms push these ridges further up. These ridges act like timelines of past events. At Turakirae Head, there are several ridges. They run parallel to the shore.
Scientists have studied these ridges. They found that the second ridge formed between 110 and 430 BC. The third appeared between 2164 and 3468 BC. The oldest formed between 4660 and 4970 BC.
Each earthquake uplifted the land. After each quake, a new beach formed below the old one. The ridges are tilted towards the west. This shows how the land has changed over time.
Turakirae Head is not just about geology. It is also a haven for wildlife. In 1950, fur seals established a colony here. Now, up to 500 seals overwinter at Turakirae Head. Most are young males.
You might also spot skinks and geckos here. Birds like the banded dotterel also live here. The variable oystercatcher nests here. If you are lucky, you will see the Caspian tern.
The reserve also protects special plants. One example is the shrubby tororaro. It is a nationally threatened plant.
Sadly, Turakirae Head faced threats in the past. In the 1960s, workers removed tons of boulders. They used the rocks to build the Wellington Urban Motorway. To protect the area, the government bought land here in 1970. This created the Turakirae Head Scientific Reserve.
Offshore from here lies another secret. Between 1905 and 1952, 29 ships were sunk. The scuttling ground is about five kilometers southeast of Turakirae Head. The water is about 700 meters deep. These wrecks represent a range of ship technologies.
Turakirae Head is a place of science and beauty. It is a reminder of earth’s power. It is a sanctuary for seals and plants. It is also a place of hidden history.