What are some defense adaptions of arachnids?

Arachnids have developed various defense adaptations to protect themselves from predators. Many, like Spiders, can produce venom to immobilize or deter attackers, while others use camouflage to blend into their environment. Some arachnids, such as scorpions, have hard exoskeletons that provide physical protection, and certain species can also employ mimicry or intimidation displays, such as raising their pincers or legs to appear more formidable. Additionally, some arachnids can escape quickly by using silk threads to drop or by rapidly moving away from threats.