Our first look at a juvenile one. It was on the sand at about only 2m depth.
Approx. 35mm.
Between 2 to 3 mm.
3 m depth.
13 degrees
On old encrusted metal beam lying on the sandy substrate under the wharf.
There were at least 10 + on these hydroids growing on the clump of sea tulips.
The Doto were laying eggs and all the ones I saw had the brown speckling markings on them as per @apteryx54 observation on 23.5.2023.
https://inaturalist.nz/observations/163248687
I didn't get as good as photos as Richard there was a current and were hydroids in the way but still am posting observation for recording.
There are two in the last photo laying eggs, one on each frond the back one is upside down.
Very happy to find this one. The vis was really bad still from rain so I was only searching in the shallows.
I dove down to take pics of a gold-margined nudi on a sponge and caught this one in the corner of my eye on the same sponge. Pretty lucky.
At one point I had lost it, but it had just moved to something with less contrast, which just shows how easily they can be missed if they aren't obvious.
~1cm long
~2m subtidal
Group of them between 5mm and 10mm spawning on a wharf pylon.
4 m depth.
35mm at 5 m depth.
See observation also by @apteryx54