The mostly found nudibranches around here are phyllidiaes and chromodoris, but we see many other species, of all shapes and colors, sometimes hard to identify. And how many more we just don't see, we, I mean divers like me, looking around in the blue more than close on the ground, more wide-angle than macro. But many divers are fascinated by sea slugs and worms : one barracuda and I once watch for over five minutes before he noticed us, a diver lost in the contemplation of a motionless flat worm. We could have been blue whales.