Woman bitten by unidentified creatures in river

A swarm of mystery creatures attacked a woman in an Australian river.

Adele Shrimpton was launching her boat off the Tweed River in New South Wales when what are described in reports as 'carnivorous micro-fish' attacked her legs.

She told the Tweed Daily News that she could feel herself being bitten and thought at first the culprits were sea lice. "Then I went "holy crap" — there was all this blood!" she said.

The bite wounds have healed into spotty scabs, but experts have so far been unable to identify what caused them.

Ms Shrimpton says she is worried about young children being bitten if they venture into the Tweed River.

"It's probably just some blood-sucking creature that's in the water, but people should know that it's there," she added.