Spitting eurypterid
Type Vermin
CR 12
Environment Temperate or warm ocean

Source: Souls for Smuggler's Shiv, pg(s). 78-79

The rightly-feared spitting eurypterid is believed to be the larget-known variety of eurypterid or sea scorpion. Its deadly poison can kill a normal person in seconds, and it can emit a jet of high-pressure water from its mouth that can reduce a stout stone wall to rubble in a single blast. Like its smaller cousins, the spitting eurypterid generally can be found in the oceans of Golarion, and rarely makes its way onto land.[1]