Juergen Freund / Box jellyfish {Chironex sp.} in mangroves, split level, Australia

Juergen Freund / Box jellyfish (Chironex sp) amongst mangrove roots, Palawan, Philippines.

Juergen Freund / Box jellyfish (Chironex sp) amongst mangrove roots, Palawan, Philippines.

Juergen Freund / Photographer Jurgen Freund photographing box jellyfish (Chironex sp.) in the mangroves, Australia.

Juergen Freund / Photographer Jurgen Freund photographing box jellyfish (Chironex sp.) in the mangroves, Australia

Juergen Freund / Filipino fish- pen minder handling a box jellyfish (Chironex sp.)

Juergen Freund / Lifeguard on beach with sign and flag warning people of Jellyfish, next to stinger-resistant enclosure, Queensland, Australia 2006

Juergen Freund / Lifeguard removing Jellyfish from net, after clearing stinger-resistant enclosure, Queensland, Australia Note - Surf Lifesaving Queensland have an effective policy of dragging nets through the water...

Juergen Freund / Lifeguard dragging net through stinger-resistant enclosure, checking for Irukandji and Box Jellyfish, Queensland, Australia 2006

Juergen Freund / Beach report board, warning people not to swim because of Irukandji and Box Jellyfish, Queensland, Australia 2006

Juergen Freund / Lifeguard checking water sample for Irukandji and Box Jellyfish after drag-netting stinger-resistant enclosure, Queensland, Australia 2006

Juergen Freund / Box jellyfish {Chironex sp.} in mangroves, split level, Australia

Juergen Freund / Box jellyfish {Chironex sp.} in fishing net, Australia

Juergen Freund / Box jellyfish {Chironex sp.} amongst mangroves, Australia

Juergen Freund / Box jellyfish {Chironex sp.} amongst mangroves, Australia

Norbert Wu / Sea Wasp (Chironex fleckeri) warning sign notifying swimmers that sting can be fatal, Queensland, Australia

Norbert Wu / Sea Wasp (Chironex fleckeri) sting can be fatal, Queensland, Australia

Juergen Freund / Box jellyfish (Chironex fleckeri). Far North Queensland, Australia.