Beneath the Canopy: Snorkeling the Kelp Forests of Patterson Inlet

Located on Golden Bay Road in Oban, New Zealand, Dive Rakiura offers a distinct underwater adventure through the kelp forests of Patterson Inlet. This spot sits within the Te Wharawhara Marine Reserve near Ulva Island and showcases one of the most diverse marine ecosystems in the region. With crystal-clear waters fueled by nutrient-rich currents, the kelp forests stretch like towering underwater groves, home to over 260 species of native seaweed and an abundance of marine life.

Participants in the Kelp Forest Tour spend roughly two to three hours immersed in this unique habitat, guided by experienced local instructors who prioritize safety and environmental stewardship. The tour includes boat transfers, whisking participants quietly along the sheltered coastlines to optimal dive points. The underwater landscape is marked by vast stands of bull kelp, which sway with the tide, creating an ethereal aquatic forest. There’s the chance to encounter blue cod, butterfly perch, and sometimes even the elusive New Zealand sea lions that frequent the area.

Dive Rakiura’s location on Stewart Island / Rakiura—a remote and wild frontier in New Zealand’s Southland—makes this kelp forest tour especially compelling. The marine reserve status protects these waters, preserving both biodiversity and water clarity, which contributes to exceptional underwater visibility. There’s a strong emphasis on conservation during tours, educating visitors on the ecological importance of kelp forests as nurseries and carbon sinks.

This trip stands out for its blend of comfort and wilderness. The small-group format ensures personalized attention, while the relatively easy physical demands open the tour to many skill levels. For outdoor adventurers drawn to marine environments, this is a rare chance to witness a thriving kelp ecosystem in one of the country’s most pristine marine sanctuaries.