Pelagic jellyfishes and comb jellies

[Extract:] The jellyfishes are conspicuous, but poorly understood, members of the Great Barrier Reef (GBR) fauna. Much attention has been given over the past 70 years to two groups in particular: the so-called ‘box jellyfishes’ and ‘Irukandjis’, both of which are highly dangerous and have killed humans. However, the dangerous species comprise only a small fraction of the jellyfishes that make their home in the GBR region.