the irukandji is related to another jellyfish. this is the box jellyfish, "chironex fleckeri". irukandji was identified in 1964 by a cairns doctor, jack barnes. because of this, its scientific name is named after him. when people were getting hurt in the sea, barnes was sure it was because of a jellyfish. he put on diving equipment and lay on the sea floor for six days until he discovered it. when barnes discovered the irukandji jellyfish, he tested its sting on himself, his son, and a lifeguard. they all had to be taken to the hospital.