another unidentified critter!!

[chris kippax]

Critter????
Found this thing on Heron Island Bommie on the GBR
Depth:10m
Time: Day
Temp: 24c
Size: Outside Diameter 100m
Substrate: Porites/Algae


Any help would be much appreciated!!!

 

[Diver0001]

Off the cuff it looks like a nudibranch. Was it moving?

 

[ocdiver1]

it's a flatworm.. but can't tell you its exact name

 

[chris kippax]

I did not see it move but it looked as if it could. My first impression was a species of flatworm but am unsure as I could not distinguish front/back/top/bottom.

 

[chillyinCanada]

Flatworm: Thysanozoon nigropapillosum

 

[Quero]

It's a fairly common polyclad flatworm: ​Thysanozoon nigropapillosum.
It's facing away from the camera.

 

[chris kippax]

Cheers guys!!!