Spread atop a wooden board are about half a dozen small octopuses, alive and squirming. The Korean "mukbang" influencer Ssoyoung warns her viewers not to try the delicacy—a known deadly choking hazard ...

It’s maybe 10 inches long, thick and hard as a rock, and Kim Thai is about to film herself putting the entire thing in her mouth. “This is going to get dirty,” she says eagerly, before eventually ...