The Spanish dancer (Hexabranchus sanguineus - meaning "blood-colored six-gills") is a dorid nudibranch. Not a human dancer, but amazing colors.
'Magnificent Jellyfish' by OceanSense Productions [tags Tanzania Africa]
In pictures: Sea angels and other amazing undersea creatures
The "sea angel", a swimming sea slug, is most beautiful of the deep sea animals he snapped -- not exactly a tough contest to be fair. Mostly transparent, the sea angel's internal organs appear to glow brightly in the image.
Last week, the IUCN 2009 Seamount expedition ended, with scientists sampling two final seamounts in the Indian Ocean. Caught at was this deep-sea anglerfish, also known as a seatoad. Sarah Gotheil From BBC news