This is a shot of the 3-foot spiny dogfish shark that scientists were in the process of reeling in when it was swallowed by a much larger sand tiger shark. !!! The researchers had captured a shark within a shark, which prompted pro bass angler Aaron Martens to comment: "There's gotta be some kind of 'turducken' label for this kind of situation." The sand tiger in the photo looks to have lost a couple of front teeth during its attack on the dogfish and/or its capture (and release) by scientists.