Talk to us about how we got to this crab [creature].

So we started off, first of all, with the location. We knew that it was going to be Pyro 1 in this case, and that helped us with a lot of things and just deciding what would make sense on a planet like this. The discussions that we had were, well, did this animal develop naturally, or was this something that was seeded on the planet? In this case it's supposed to be naturally occurring on this planet and it's evolved with these conditions in mind. We knew we wanted a predator, so this thing lives off of hunting other prey that's on this planet, or maybe also humans in this case. And then the other part that we decided upon was that the large one you see in the image is the queen of basically a hive, that she's got all these little babies that also are there, and possibly these creatures use the cave systems to lay their eggs in. And that's why you find these clusters of the little ones inside the caves. And then we also discussed other things like, if it's on the surface, what does it do? And how might you come across it? And so we've talked about these things actually using camouflage with the rocks around them. So when they all hunker down, they might look exactly like a pile of those rocks and you might not even know that it's there. So definitely a few things that helped us make some decisions with what we wanted to do with it. But we still have lots of other things to work out as to what other creatures might exist on these planets and stuff. For example, what are the prey animals this thing eats? We haven't got to that point yet.