Shrimp/crab on soft coral, Indonesia

I'm just going through my photos of the Togian Islands (Sulawesi) and our local guide kept pointing at this. I couldn't see anything at the time. We were in around 12m in the Tomini Bay, about 100m off-shore on the Kadidiri Paradsie Resort house reef. The pointer in the picture is approx 5mm wide. It's no keeper, I'd just like to know what it is.

Any help gratefully received.

My guess is some species of Whip Coral Shrimp. Some examples here:

https://seaunseen.com/ankers-whip-coral-shrimp/

Which exact species is a little more difficult to determine.

Looks like a humpback soft coral shrimp?

Yep, humpback it is! Just checked on a google image search. Thank you!