Sting with tacticle stimulation. In order to fire, stinging cells must be chemically stimulated. Chemicals come from surface of fish, shellfish and humans. An individual sea wasp enough venom to kill 60 adult humans. Death occurs rapidly.
Sea wasps are strong swimmers.
References Hamner, William M. Australia's Box Jellyfish-A Killer Down Under. Hartwick, R.F. 1991. Distributional ecology and behaviour of the early life stages of the box-jellyfish Chironex fleckeri. Reference written by Anne Bartalucci, Bio108 student. Page last updated 07 February 1996.