Just off the coast of New Plymouth lies a submerged volcanic landscape that predates even Mt Taranaki. Rising from the Tasman Sea, a scattered group of sea stacks and seven rugged islands create one of the most unique diving environments on New Zealand’s west coast. These islands, now a designated marine protected area, provide rare shelter along an otherwise exposed and energetic stretch of coastline.

Below the surface, this volcanic terrain transforms into a playground of outcrops, canyons, and ledges teeming with life. These formations offer incredible biodiversity, making the area a favourite for both beginner and experienced divers looking to explore something different.

Further down the coast, black-sand beaches at places like Oakura and Opunake conceal shallow volcanic reefs and long-forgotten lava flows. Among the boulders and cracks, you’ll often spot crayfish, paua, and familiar reef species tucked into the nooks — and if you’re lucky, a few surprises too.

For the wreck enthusiasts, there’s history waiting underwater. In Namu Bay, north of Opunake, the wreck of the Lord Worsley lies scattered in shallow waters. This steamer ran aground at 1.30 a.m. on September 1, 1862, and its remaining iron plates now offer an atmospheric dive with a story behind every shape.

Further north, near the Oaonui Stream, you’ll find the remnants of the iron barque Northern Monarch, which met its fate in November 1903. The scattered wreckage is still visible and adds a rich layer to the region’s dive offerings.

For serious cray hunters, the Waitotara and Patea Reefs are legendary. These deeper reef systems are known as some of the best crayfish diving spots in the North Island, with large rocky structures and strong currents that attract abundant sea life.

Whether you’re into photography, wrecks, reef ecology or just want to experience a truly untamed underwater coastline, Taranaki’s dive scene has plenty to offer — and it’s still one of New Zealand’s best-kept secrets.