Hi! Since spotting this alien-looking thingie, it's been haunting me. So if you can help me identify it, I would be most grateful
I saw it on a night dive off the coast of Sabang, Puerto Galera, Philippines in december 2011. It's huge, i couldn't even fit it in the picture. At least a meter long and 30 cm in diameter. Colours are pretty well represented in the photo of the front end (or back end?).