Blue Dragon Nudibranch - Glaucus altanticus Other common names: sea swallow, blue glaucus, blue dragon, blue sea slug and blue ocean slug. Lake Macquarie, NSW, Australia My son and I found this amazing little creature while catching prawns (trying to!). I've only ever seen one of these animals once before many years ago when my son was very small - he is now 16yo. We saw it on a beach but had no idea what it was at the time. It became a story that we talked about for years and my son would…