Ghost Sharks Grow Retractable Teeth Out of Their Forehead – Not to Eat, But to Mate

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Life in the dark depths of the ocean can be solitary, especially for a male chimera. Therefore, when one of these creatures finds a mate, he needs to embrace it. To do so, the chimera male, also known as rat fish or ghost shark, uses a fleshy appendix, similar to a mallet, that protrudes from his forehead. It is called a tenacle and holds the female pectoral fin during mating. If that sounds strange, it becomes even more strange: the bulbous end…