British researchers are setting sail on a 9,000-mile expedition - where they expect to encounter marine wildlife including a fish that looks like the terrifying monster from the Aliens movies. Viper fish are deep sea fish with long transparent fangs and hinged lower jaws.
Their size varies by species, but they typically grow around 1ft long. With their huge teeth that help them to grab hold of prey, viper fish are one of the deep ocean's fiercest predators and their appearance resembles that of the Xenomorph from the sci-fi horror movie franchise Alien.
They are thought to swim to their victims at high speeds and quickly impale them with their teeth. Their teeth are so big that they do not fit inside their mouth and curve back very close to their eyes.
