Another Gold lace nudibranch (Haigerda terramtuentis), this one is feeling a little more bold--notice the gill tuft is fully extended. However, the rhinophores at the front are tucked in a bit...just being cautious, I guess.

Blue dragon nudibranch (Pteraeolidia ianthina), macro head-on view...

A fantastic (and very large!) Red-margin spanish dancer (Hexabranchus pulchellus)...the Hawaiian swimming crab (Charybdis hawaiensis) in the foreground--apparently ready for his closeup--will give you some scale.