Scientists diving recently near the Solomon Islands made an illuminating discovery: The first biofluorescent reptile ever recorded.
During one night dive, his team was on guard for crocodiles that frequent the area, "and there came out of nowhere this fluorescent turtle," says Gruber.
It looked like a big spaceship gliding into view, he recalls: An alien craft with a patchwork of neon green and red all over its head and body.
The marine biologist captured the turtle sighting on a video camera system, whose only artificial illumination was a blue light that matched the blue light of the surrounding ocean. A yellow filter on the camera allowed the scientists to pick up fluorescing organisms.