People have been warned not to eat certain shrimp sold at Walmart stores across 13 US states due to possible radioactivity. The Food and Drug Administration (FDA) said today that the seafood was found to contain Cesium-137.

So-called 'radioactive shrimp' have sparked panic online, with Walmart pulling the product after safety concerns. But do they really glow in the dark and what's behind the scare?

Walmart has recalled some of its shrimp products in the US after radioactive material was detected in a shipment of seafood. The US Food and Drug Administration (FDA) warned the public not to eat frozen shrimp sold under Walmart's Great Value label could have been exposed to a dangerous isotope in shipping containers.