Watch: Massive 'sea monster' washes ashore in Indonesia, people mistook it to be a stranded boat

A mysterious sea creature on the beach of Indonesia has been holding the interest of locals for past few days. Residents of Hulung Brach, in the west of Indonesia’s Serum Island first saw the giant carcass on Tuesday evening and they mistook it as a stranded boat.

The massive sea animal which appeared to be dead for past three days is 50 ft in length and water around the carcass turned red in color.

Local fishermen initially thought it could be a giant squid but experts say it looks more like a decaying carcass of a whale.

However, the species is not yet confirmed and tests are being carried out to check that.

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Earlier this year, a mysterious hairy sea monster was found on a beach in the Philippines. It baffled locals who speculated the two-tonne creature was a kind of rare undiscovered dugong.

It was later identified as a whale - but had developed a strange appearance due to decomposition.