Halosaurs are eel-shaped fishes found only at great ocean depths. As the family Halosauridae, halosaurs are one of two families within the order Notacanthiformes; the other being the deep-sea spiny eels. Halosaurs are thought to have a worldwide distribution, with some seventeen species in three genera represented. Only a handful of specimens have been observed alive, all via chance encounters with remotely operated submersibles. From the Greek hals meaning "sea" and sauros meaning "lizard", ha… (More on Halosaurs)