Sound artist David Kamp asked to me create a creature based on a sound he curates. You can see and here it here.
Introducing karkinos does the cha cha. The line dancing crab was tragically squished after Hera got all up in his shit and told him to join the battle between Hercules and Hydra. While Karkinos tried to nip at Hercules toes, he crushed poor Karkinos. But as a reward for his service, Hera placed him amongst the stars as the constellation Cancer.