 Seafood is produced by farming and by fishing. Fishing techniques vary from a person using a line in a boat to large trawlers pulling nets across the ocean floor. The arguments for and against seafood production are much like the arguments for and against meat production: Some worry about the effects on humans of these practices. (Some workers, for example, are enslaved on shrimpers.) Some worry about the effects on the environment of these practices. (Some coral reefs, for example, are destroyed by trawlers.) Some worry about the permissibility of killing, hurting, or controlling sea creatures or treating them merely as tools. This last worry should not be undersold: Again, Mood and Brooke (2010, 2012, in Other Internet Resources) estimate that between 970 billion and 2.7 trillion fish are wild-caught yearly and between 37 and 120 billion farmed fish are killed. If killing, hurting, or controlling these creatures or treating them as mere tools is wrong, then the scale of our wrongdoing with regard to sea creatures beggars belief.