text: Box jellyfish aka Sea wasp
  The box jellyfish is also known as box fish and sea wasp. It has one of the fastest working toxins and kills more people each year than any other marine animal. The box jellyfish (sea wasp) is primarily a problem in Australia. Australia is subjected to a box jellyfish season that usually lasts from October to April, and box jellyfish are also known to regularly swarm along Hawaii's leeward shores 9-10 days after a full moon. Box jelly fish that swarm outside Hawaii do not belong to the potentially deadly species Chironex fleckeri (about which this article is written). They are the less harmful species Carybdea alata and Carybdea rastonii that can cause severe pain and anaphylactic shock in some of those that get stung. Only sever allergic reactions will cause stings from these two species to be fatal.
  Sea wasp (box jellyfish) stings can cause excruciating pain in humans. The tentacles stick to the skin and should never be removed while they still are alive since this might increase the damage. The pain can remain for weeks if not treated and the sting often leaves a scar. Sea wasp stings are causing a high number of deaths each year in effected areas. The stings from a sea wasp can be threaded by pouring vinegar (never methylated spirits) on the remaining tentacles. This will kill the tentacles and make it possible to remove them safely. You should always seek professional help as soon as possible after a sea wasp sting since you need to be given proper treatment and antidote to the venom. The stings can cause cardio respiratory arrest or arrhythmias, so don't delay seeking medical attention.