Off the tip of New Zealand's North Island, the coast of Tutukaka is teaming with pelagic activity. These clear subtropical waters are paradise for dolphins, orca and rays, with huge aggregations of bull rays and stingrays often sighted at several of the islands’ dive sites.
From the moment you arrive it's clear you don't dive around Tutukaka, you dive in them: there's no shortage of grottoes, chimneys, tunnels and archways to burrow into. Healthy fish populations create mesmerizing displays below the waves. Swim through huge clouds of pink and blue mao mao sheltering in volcanic arches or drift over kelp forests with snapper and trevallies. Feeding fish make the sea surface bubble and 'boil'.
Preserved by the islands' distance from the mainland, Poor Knights' endemic marine creatures are a vignette of past times that can be enjoyed at all times of the year.
The northern tip of the North Island is New Zealand's warmest region: summers are warm and winters are mild. Under water there are two distinct seasons. Winter (May-October) has better visibility (over 30m on good days) while the remaining summer months (November-April) have more plankton and marine life.
In winter, water temperatures are around 57°F/14°C so a semi-dry wetsuit is adequate, but you'll be nice and toasty in a drysuit. Summer waters are a comfortable 68-73°F/20-23°C - the visibility is lower, but chances of encountering stingrays and orca are at their highest.