Animal rights activists estimate that more than 100,000 dolphins, porpoises and small whales are killed worldwide every year. In some areas, the market value of dolphins as bait even exceeds their value as food.

Fishermen kill the animals in the belief that they are supposed to be "competitors" to eliminate the dwindling fish stocks. In addition to Peru and Ghana, the list of countries with the most dolphins and small whale killed includes Nigeria, Brazil, Venezuela, Greenland and Taiwan.