The spectacle of thousands of jellyfish at Hobart's waterfront dock may be breathtaking, but a leading scientist has warned ...

The main species of jellyfish you're likely to encounter on Welsh beaches are: the lion's mane, compass, barrel or root mouth ...

WATCH HERE >> Local Tasmanian biologist and expert on marine ecosystems Lisa Gershwin said witnessing the moon jellyfish combined with a bloom of bioluminescent algae, noctiluca scintillans ...

It resembles a moon in appearance and is roughly the size ... mostly brownish in colour. The blue jellyfish is often confused ...

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 ...