User blog comment:Toa Vorak/Something that the inner nerd in me brought out/@comment-46464-20090118021044

Like you said, Matoran normally eat by energy pools. But in environments like Mata Nui and Voya Nui, they need to eat meat, which they do by absorbing the energy straight out of it. As for reproduction, no one knows how Matoran reproduce and Greg doesn't plan to tell us. All we know is that, as you said, reproduction could be done on Metru Nui, but not on Mata Nui.