Artificial intelligent assistant

Species identification - greenish blue ocean worm (nudibranch?) in Perhentian Islands, Malaysia We found this on a beach at the Perhentian Islands, Malaysia in March, 2016 and cannot identify it. It's some sort of worm-type creature with many legs and bluish back about 15cm long. The legs undulated along the body as it swam. back: ![sea millipede]( belly side: ![sea millipede underneath](

It's hard to identify from the photos provided, but I think it is _Chloeia flava_ (a species of polycaete worm, within the phylum Annelida), also known in English as the "Golden Fireworm". The size is roughly similar to what you describe (they are typically about 7-10 cm long). The individual you observed looks like it lives in sandy bottom environments (not a typical environment for a nudibranch), and this worm does also. It is commonly found all across the warmer Indo-Pacific as well, and looks like the individual observed in your photo.

If it is not this species, I think it is another species of the same family, Amphinomidae.

![Chloeia flava](

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