As a result, it was reclassified to the genus Morbakka due to its distinctively shaped rhopaliar horns which resemble rabbit ears.

[1] M. virulenta is one of the largest species of box jellyfish, with tentacle lengths of about three metres at maximum extension.

[4] Although the exact habitat distribution is unknown, its range may possibly extend to much of the Indo-Pacific as well as the open ocean.

The metamorphosis of embryo into primary polyps has been observed to take 21 days, significantly longer than other box jellyfish.

[4] While M. virulenta is known by local fishermen and divers as a dangerous species and has been described as having a fiery sting,[3] it has not yet been confirmed if they contain the toxic venom that cause Irukandji syndrome, which can lead to heart failure and death.