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Phyllodesmium jakobsenae


This is one of my 'dream-encounter' for the 'mimicry-in-mimicry situation' even though I didn't realised it during the dive. Only noticed the Xenia Shrimp - Alcyonohippolyte commensalis on the cerata of the Phyllodesmium jakobsenae when going through my video footages a week after the dive! And luckily, I have just this one decent shot showing the Shrimp on the Nudibranch. This Phyllodesmium jakobsenae Nudibranch mimics its host the Xenia Corals and also feeds on them. The Xenia Shrimp can be found on the polyps of the Xenia Corals with similar colouration and markings/patterns, making them very difficult to find/see as they are very small, usually less than 1 cm in size.


Lives among Xenia corals

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AlbertKang 10 months ago

Thanks, @LaraWhitlam :)

LaraWhitlam 10 months ago

Really beautiful!

AlbertKang 10 months ago

Thanks again, Machi :)

Machi 11 months ago

Wow! Awesome video! I was wondering what that shiny dot was in the photo.

Brian38 11 months ago

Thanks for pointing that out Albert! Incredible video!

AlbertKang 11 months ago

@Machi, do you see the 'shiny eyes' about 1 cm above the rhinopores of the Nudibranch? That's the eye of the Shrimp. It is resting on the cerata of the Nudibranch.

Check out my video footage of them here :

It was only after reviewing my video footages a few days after the dive that I noticed the Shrimp and then only I reviewed my pics to see if I managed to get a decent shot of the Shrimp on the Nudibranch, unfortunately, it was not the best of focus on the Shrimp as I wasn't even aware it was there then.

Machi 11 months ago

I can spot the nudibranch, but not the shrimp! Obviously very good mimicry then! :)

Spotted by

Batangas, Philippines

Spotted on Nov 21, 2019
Submitted on Nov 29, 2019

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