Scientists in Colombia have discovered a new species of scorpion, Tityus achilles, which can spray venom to defend itself ...

"Most scorpions are likely capable of spraying venom. They just don't do it. This extreme behavioral response is only known ...

The giant sea scorpion was an enormous predatory aquatic arthropod. This ancient scorpion reached almost six feet, the size of a modern human, and lived on Earth’s oceans, hunting other ...

Some species grew to more than six feet (two meters) in length and are considered the largest arthropods ever to have lived. Bearing a resemblance to their scorpion descendents, eurypterids had a ...