A sand tiger shark is seen eating a banded hound shark at COEX Aquarium on January 29 in Seoul, South Korea. According to the statement by aquarium representatives, sharks sometimes bite other sharks out of…  COEX Aquarium/Getty

It took the 8-year-old female 21 hours to eat the 5-year-old male inside a tank at the COEX Aquarium. According to video of the consumption, the female shark started with the male’s head and slowly went about consuming the rest of his body.