Mass Spawning of Marine Invertebrates in Southern Australia

On three occasions I have observed a mass spawning in South Australian waters, last years being the largest. Over a 36 hour period, six species of seastar, two species of brittlestar, two species of polychaete, two species of ascidian and one nermetean spawned. Here are a few photos.
I believe this is a nemertean, if you know what it is could you send me an email. Streams of sperm can be seen coming out of the side of the body. Photo courtesy David Stevenson.
The brittle stars only spawned after dark, they climbed to the top of nearby objects, in this case an ascidian. If you look closely you can see three. Photo courtesy David Stevenson.
A maleUniophora granifera in a classic spawning pose.


Below are four photos of Tosia australis spawning. The top left photo has three individuals who have climbed about 30 cm up a pylon. The top right photo is a close up of the left most individual of those three, if you look closely you can see some small brown eggs being released. The bottom two photos are both of males that have climbed up to the top of the low relief reef on which they live. The bottom right photo shows a strand of undiluted semen which has travelled some distance downstream, this would have some impact on the fertilisation success.
This is a female Asterina atyphoida releasing eggs. Photo courtesy David Stevenson.
I dont know the species here, but I have a few samples and should be able to work them out. This species of ascidian covers many square meters at the site and when it released its eggs and sperm the visibility went from 5 meters to about 1 meter. Photo courtesy David Stevenson.

If you have seen any spawning invertebrates in southern Australia I would love an email. I am looking for a whole bunch of information starting with

1) Time
2) Location
3) Starfish seen (even if not spawning)
4) Number of starfish spawning
5) Appearance of eggs including bouyancy

However if you only get a bit of information such as
"3 Uniophora seen, none spawning and 2 Tosia seen spawning at about 11:30 am at Flinders Pier" it would be great.