When you've got parasites and no hands, cleanerfish come to the rescue. These two spot demoiselles aggressively pursue a striped mado hoping it will pick off their unwanted passengers.
Short-tailed stingrays gather at the Poor Knights
The short-tailed stingray Dasyatis brevicaudata ranges across South Africa, southern Australia and New Zealand. Every summer short-tailed stingrays gather at the Poor Knights Islands Marine Reserve off the Tutukaka Coast of northern New Zealand. It's the only meet-up of its kind that has been documented for this species.
Stingrays return to Northern Arch
A mystical underwater phenomenon not observed since 2001 is happening right now in New Zealand. Large numbers of female short-tailed stingrays have stacked in Northern Arch at the Poor Knights Islands.
This shaggy-do purple nudibranch called Jason mirabilis is a real beauty, and remarkably it's only found in New Zealand.
Clown nudibranchs are the most commonly spotted sea slugs in north eastern New Zealand.
Triplefin spawning season
June to August is winter in New Zealand and is the period of peak activity for some spawning triplefins.
It's a mystery how they synchronise... when the phase of moon and tides align New Zealand's jewel anemones explode in a mass spawning event.
Male jewel anemones
In the New Zealand winter jewel anemones swell with eggs and sperm in the lead up to a mass spawning event.
Demoiselle nest site
During the summer spawning season male Demoiselles hug the rock, protecting their nest site and its silvery patch of eggs.