A dead dolphin was found over the weekend on the Caribbean beaches of Bello Horizonte, located on the outskirts of the northern Colombian city of Santa Marta, environmental officials said.
The marine mammal, which weighed about 70 kilos (154 pounds), had wounds that appear to have been caused by a boat propeller.
Bathers found the dolphin floating off the beach on Sunday, brought it ashore and contacted maritime officials, Caracol Radio reported.
The marine mammal was not killed by dynamite, which local fishermen use to catch fish and often kills other species, officials said.
Dynamite blasts are heard regularly off Rodadero Sur, Aeropuerto and Bello Horizonte beaches in Santa Marta, the capital of Magdalena province, and the practice continues despite the arrests of some fishermen. EFE