Hundreds of tourists claim to have seen the Chinese Nessie while visiting a lake there.
The legend of the monster of Tianchi Lake has been around for a century but this is thought to be one of the best mass sightings.
Witnesses say the black creature has the head of a horse and was around 30 feet away from the bank when spotted.
Two separate groups of tourists, one of them on a nearby mountain, are reported to have seen it leaping from the water.
Meng Fanying, director of a Songjiang District Tourism Bureau, said: "That lasted for about 10 minutes, and some 200 sightseers on Changbai's western peak said they saw it."
Xue Junlin, a local photographer, said it looked just like a model of the Tianchi Lake monster on display at a nearby museum.
He told the China Daily: "They both have horse-like heads."
Tianchi Lake is 373 metres deep and volcanic. Scientists say it would be impossible for any large creature to survive in its waters. The lake is in the Changbai Mountains in Jilin Province, Northeast China.