Epsilon 15's tail, for example, has six 'spikes' in it, but they aren't arranged in a neat hexagonal ring. They're highly deviant. Because they're so off-kilter, only two of the spikes actually grasp the shell surface. It's probably not very exciting news to anyone who doesn't look at these things for a living, but what it shows us is that the viral world holds many unexpected secrets, and if we're going to unlock them, we need to see them first.
Wen Jiang