Hi Sumait

From the photos which is not enough to confirm holothurian species, I agree
with S. pseudohorrens and H. pervicax.
The 1st photo is probably a species from the complex Holothuria impatiens.
I hope that Gustav Paulay and Francois Michoneau will also comment on this.
Best regards

2017-08-26 3:13 GMT+02:00 Sumaitt Putchakarn <[log in to unmask]>:

> Dear all,
> I am sorry for disturbing you. My colleague and I are now revising the
> Checklist of Thai holothurians. In 2006, my colleagues took the
> holothurians photo from Surin Islands, Andaman Sea as the attached file,  I
> am not sure that I identified correct or not. I would appreciate if you
> could please suggest or identified these holothurians.
> Thank you very much.
> Sumaitt
> ------------------------------------------------------------
> ------------------
> Sumaitt Putchakarn Ph.D.
> Head of Marine Biodiversity Research Unit
> Curator of Porifera and Echinodermata
> Institute of Marine Science, Burapha University
> Bangsaen, Chonburi 20131 THAILAND
> e-mail: [log in to unmask] ; [log in to unmask] ; [log in to unmask]
> ------------------------------------------------------------
> -----------------------------

Chantal Conand