Top Ten New Species: "walking" fish, T. Rex leech, more
Glowing nonstop in the Brazilian rain forest night, the newfound mushroom Mycena luxaeterna (pictured both in daylight, top, and in the dark) is something of a source of eternal light, as its Latin name—inspired by verses from Mozart's "Requiem"—implies. San Francisco State University's Dennis Desjardin and colleagues scouted for glow-in-the-dark mushrooms during new moons, in rain forests so dark the researchers often couldn't see their hands in front of their faces, Desjardin told National Geographic News in 2009. But "when you look down at the ground, it's like looking up at the sky," Desjardin said. "Every little 'star' was a little mushroom—it was just fantastic."