While most other nudis munch on algae, hydroids and other such stuff, these ones make a meal out of other nudis. They find the slime trail left by another nudi then follow it from behind, catch it's tail in their mouth then proceed to swallow it's entire prey whole.
It was quite fascinating to watch. The entire process took about 16 minutes. At the end of the video I have sped up the entire clip into 30 seconds, so you can (quickly) watch the whole process there.
Edited by liquidguru, 06 May 2012 - 09:47 PM.