Mistaken for years, this highly venomous jellyfish is actually a new species

A new species of box jellyfish, previously misidentified, has been discovered near Singapore. Initially thought to be Chironex yamaguchii, specimens collected in 2020 and 2021 were found to actually be Chironex blakangmati. Scientists identified the species by comparing the physical characteristics and DNA of the two jellyfish. The main difference lies in the lack of certain branched canal structures in Chironex blakangmati, located at the bottom of its bell-shaped body.

This unique feature sets it apart from its similar-looking counterpart. Both species share a reputation for their potent venom and aggressive swimming behavior, posing significant risks to humans. The discovery of Chironex indrasaksajiae, yet another potentially lethal species, in Singapore waters further highlights the need for understanding the distribution and impacts of these creatures.

Understanding this new species' habitat and characteristics is crucial for assessing the risks they present to people entering their waters.