Sargassum or Sea Slug?

Was at St John’s Island on the third day of the Lunar New Year. As the only filmcrew, I have to do the shooting as well as keeping a lookout for marine creatures.

So there you are, holding the camera in one hand and my chopsticks on the other, I ventured out in search of things to shoot. Spotted two sea slugs while I was on my way to shoot a ribbon worm. One was found stranded on sand and the other on a piece of sargassum seaweed. A check on the Sea Slug Forum, it look like a crosslandia sp.

Doesn't the sea slug look like part of a sargassum seaweed?

Here’s a closer look at it.

Besides that, the Polka-dot nudibranch (jorunna funebris) can be found everywhere on the seaweeds and sponges. And Ron also found this nudibranch and a rarely seen flatworm.

Nudibranch : phyllidiella nigra

Flatworm : Pseudobiceros hancockanus