[ He listened intently, looking around a bit as she explained. That sounded strange -- the bit about having to hold her breath was strange, he just chalked it up to them being underwater. ] It's over a mile down, I think I read. Without diving equipment... [ And he didn't finish that thought. ]
Maybe the material has properties like my hand. [ Then he proffered his right hand, a little more obviously. ] Here. Try to go through this.