SHOT Hexabranchus sanguineus is a large, brilliantlycolorednudibranchfromthe Indo-Pacific, where it is often seen swimming in the water column, its undulating movements and vibrant red hue
leading more than one observer to compare
it to a Spanish dancer in mid-Flamenco. As
a large-growing obligate predator of live
sponges, this magnificent sea slug would
starve to death in an aquarium, meaning it
should only be observed in its natural habitat.
Photo: Laura Dinraths/