Your worst seafood nightmare come to life. A vicious sort of half-man half-crawdad, cursed with primal intelligence and blessed with a pair of razor-sharp claws. Strange things lurk in the stinking pools in caverns best forgotten and the chuul is one of them. If you spot one, your best hope is a heavy mace to crack its shell and maybe a little garlic butter. Mmmm. Instinct: To split

• Split something in two with mighty claws
• Retreat into water