A dead dugong, a marine mammal, was found washed ashore at Anthoniarpuram near Manamelkudi in the district on Tuesday.
Police said the dead mammal was found by the locals and alerted the Coastal Security Group police.
The CGP police inspected the mammal and passed on the information to the forest and fisheries departments.
A spot post mortem was carried out on the dead creature and buried thereafter.
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