Walmart is recalling three of its Great Value brand frozen shrimp products after U.S. agencies uncovered the presence of radioactive material in one sample of breaded shrimp.

On India's southern coast, V. Srinivas thrived for two decades by farming shrimp, as the country became the top supplier of the delicacy to the United States. Now, Donald Trump's 50% tariff threat is forcing many to consider other ways of making money.