National Geographic : 1986 Nov
"The whole idea is to use the sub as a blind," Kristof ex plains. "Sit on the bottom, put out some bait, take a nap, and see what comes in." On his first dive, 18 minutes after Pisces VI's mechanical arm placed a can of bait in the green glow of a thallium iodide light, a 12-foot long sixgill shark swam out of the dark and made off with it, trailing a foam float (above). Another dive and another bait can later, the support crew welded a cage of steel rods, weighted with lead, that defied the nudges and bites heard in the sub several feet away. A video sequence shows a sixgill's eye rolling protectively to reveal the white sclera as the shark at tacks the cage (left).