Illegal harvest of eggs is one of the major causes of the decline in sea turtle populations in Costa Rica. It is estimated that 90% of nests are destroyed by poachers, who sell the eggs to restaurants or illegal markets. In Nicaragua, British researchers from the Paso Pacifico organization have used a 3D printer to develop fake eggs equipped with a satellite chip to track down poachers. These eggs, called InvestEGGators, were scattered in 101 turtle nests on four Costa Rican beaches. The result: since 2020, a quarter of the fake eggs have been taken illegally, and several routes have been identified.