Jelly Mystery_1
© Peter BurgessThis mysterious blob of slime is believed to be a jellyfish left in the wake of a "mini tornado", which struck Smithfield on Saturday.
Mysterious blobs of slime have been found in a park on a quiet, suburban Cairns street and even experts are baffled.

The blobs resemble jellyfish but a scientist couldn't confirm their identity from photos taken by a shocked Smithfield man.

On Saturday, Peter Burgess was sitting on his back veranda watching the rain when conditions intensified and what he described as a "mini tornado" struck.

"Suddenly it was extremely windy to the point where I was frightened and ran inside," he said.

"It was exactly what I'd experienced in Sydney (in December 2005) and what was reported after ex-tropical cyclone Oswald, which created mini tornadoes sporadically down the coast.

"There were incredibly strong winds and a noise like a jet engine."

Mini Tornado
© Peter BurgessA "mini tornado" tore through this quiet, suburban street in Smithfield on Saturday, according to a resident.

Mr Burgess said the mini tornado lasted about a minute and affected a 200m stretch of Hockey Ave.

Images captured on his phone show uprooted and snapped trees and two mysterious, translucent blobs, which he believes are jellyfish.

If that is the case, they may have travelled at least 4km inland but Jamie Seymour, a leading stinger expert from James Cook University, couldn't confirm their identity.

Bureau of Meteorology forecaster Robin Nataniela said there was no official record of a mini tornado occurring in Smithfield on Saturday but theoretically it was possible. "It could have been "a landspout, waterspout or a funnel cloud," he said.