The rotting carcass of a nearly 14-metre (46-foot) whale washed up Thursday on Bali beach popular with tourists.
The conservation agency said it was investigating the death of the giant creature, which was first spotted in shallow waters near Batu Belig beach, north of Seminyak.
Curious onlookers gathered around the carcass but the strong smell of decay put many off, said one local.
Bali conservation official Prawono Meruanto said the creature could be a Bryde's whale, and that its carcass was later buried at the beach using an excavator.
In July, ten smaller whales were found dead on a beach in Indonesia's East Nusa Tenggara province. Locals managed to get one surviving member of the pod back into the water alive.
Cross-currents off beaches pose a danger to whales as they can get caught between reefs close to shore.
Just days ago, the carcass of a huge whale has been recovered from the waters off southern Italy, the coastguard said Wednesday, calling it "probably one of the largest" ever found in the Mediterranean.
The dead mammal was spotted in the sea on Sunday near the popular tourist destination of Sorrento by coastguard divers who were first alerted to the presence of a smaller whale, which has since disappeared into the sea.
(With inputs from AFP)