Stingray

Stingrays are among the deadliest organisms you may come across underwater, but they didn't become well-known until one of them murdered Steve Irwin, better known as the Crocodile Hunter. As the stingray family split off from sharks somewhere around 200 million years ago, they are also pretty old.

The venom of stingrays hasn't been thoroughly explored, in contrast to several other species on this list. More than 200 different ray species have been identified in ecosystems all over the world, including rivers, marshes, lakes, and oceans. All of these ray species are venomous and can result in a variety of consequences, including death, if not properly treated.

Fortunately, stingray venom hasn't killed many people before, and the species stays to itself most of the time. Fortunately, stingray venom hasn't killed many people before, and the species stays to itself most of the time. Unaware hikers and swimmers have, however, frequently stepped on them and suffered bites on their legs or feet. While most bites from more venomous species, like the one that injured Irwin, are unharmed, they can quickly become fatal in the absence of medical attention.

Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Order: Myliobatiformes
Suborder: Myliobatoidei