As tunnels fan out from the Tank Cave entrance they are named off by letter: A, B, C, D etc.
Tank Cave at D2
This floor to ceiling feature leftover from when water eroded out the passages of the cave that cave divers now swim through is a favourite of mine.
Tank Cave ice chamber
Local cave divers will know this room in Australia's Tank Cave by the inspirational name "90 Metre Room". I like to think of it as an ice chamber with a molten ceiling. It definitely feels icy on a smoking hot Australian summer's day!
Remembering the summer of stingrays
Every summer short-tailed stingrays gather at the Poor Knights Islands Marine Reserve off the Tutukaka Coast of northern New Zealand. Last summer, January 2018, was a one in 15 years event.
Common anemone - Anthothoe albocincta
As the name implies, the common anemone is abundant in New Zealand.
Night diving can get you up close with sleeping fish, and introduce you to fishes that patrol the reefs at night.