Sea Wasps

The venom of jellyfish species is shockingly uncomfortable, despite the general belief that it cannot be fatal. Jellyfish species are noted for their distinctive look. Although the majority of jellyfish species cannot harm humans, there are a handful that can, with the box jellyfish family being the deadliest.

Some species are also among the most dangerous ones to be discovered in the oceans, such as the Australian box jellyfish, also called sea wasps. Their nematocysts, which are microscopic, poison-filled darts on their tentacles, are how they sting. Within a few minutes of being bitten, it has the power to induce a heart attack, complete bodily paralysis, loss of consciousness, and even death.

On top of all that, they are typically practically transparent, making it difficult to see them in the ocean. In Australia alone, sea wasp stings have killed at least 63 individuals in the past 80 years.

Kingdom: Animalia
Phylum: Cnidaria
Class: Cubozoa
Order: Chirodropida
Family: Chirodropidae
Genus: Chironex
Species: C. fleckeri