Slug series is up! You may be wondering, isn't slugs generally slow and slimy? Well, not all slugs are like that!
Strawberry slug (Costasiella sp.) - This superbly tiny slug is usually very well-camouflaged against its home, the solitary fan seaweed (Avrainvillea sp.). This little one here must be rather adventurous to wander off its seaweed home. On the sandy background, you can see how fast it moves (over sand grains and barriers)!
Black-margined nudibranch (Glossodoris atromarginatus) - This is one of the largest nudibranch found in Singapore. Its pale yellow body usually blends in well with the sandy bottom and coral rubbles. Note how its external gills 'wave' in the water!
Starry bornella (Bornella sp.) - Besides the usual manner of gliding motion, the starry bornella does twists! It wiggles its body left-right-left-right allowing it to propel itself in the water column to swim to another area. Just recently, I encountered another bornella species doing its twist! (Note that the clicking sounds were cameras flashing!)
So you see... Slugs are not only colourful and nice to look at, they exhibit interesting locomotive behaviour. A very short post for today... Next and final series: fish!
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