The spectacle of thousands of jellyfish at Hobart's waterfront dock may be breathtaking, but a leading scientist has warned their presence indicates something in the environment is out of balance.

Though a landlubber may say the robots look more like a stumpy octopus than a jellyfish, according to the paper the shape is actually most similar to a juvenile “ephyra stage” moon jellyfish ...

While one expert says it will be a ‘once-in-a-lifetime’ opportunity, the situation is a worrying signal. WATCH HERE >> Local Tasmanian biologist and expert on marine ecosystems Lisa Gershwin said ...

The moon jellyfish comes equipped with a good ... It is not an overly large jellyfish, but it still presents a threat due to its longer tentacles and propensity to swim in shallow waters during ...

In 2006, beaches in Italy and Spain were closed because of a bloom of jellyfish known as mauve stingers. In 2013 a Swedish nuclear plant temporarily shut down because moon jellies were blocking ...

Moon jellyfish have also been reported in the area ... In the summer of 2010, a large 40-pound dead lion’s mane jellyfish broke apart after a lifeguard tried to remove it from the waters ...