Dorsal spine of Orthacanthus adamas from the Upper Freeport Coal (Carboniferous) of Linton, Ohio. The spine is about 71 mm long. Disclaimer: AAAS and EurekAlert! are not responsible for the ...

With its luminous dorsal spine, the anglerfish is well adapted for life in the dark depths of the ocean. But when it comes to relationships, some take a rather unconventional route. Pairings of ...