Blue velvet worm, Euperipatoides rowelli, Peripatopsidae
Euperipatoides rowelli occurs in humid, temperate forests of southeastern Australia. Its main habitat is decaying logs on the forest floor, where it lives in crevices and feeds on small invertebrates.
Specimens are rarely found alone, usually forming groups of a few individuals containing females, males, and juveniles. Laboratory observations on behavior concluded that these groups present some sort of hierarchy with dominant females.
Photographed in New South Wales by squiresk