Two defense mechanisms squid use is their ink sac, and also their ability to camouflage. Squid can also move really quickly through their siphon, and jet propulsion.
Host defenses that protect against infection include natural barriers (eg, skin and mucous membranes), nonspecific immune responses (eg, phagocytic cells [neutrophils, macrophages] and their...
When a squid is threatened, it releases ink from a small pouch near its beak (inside the base of the tentacles) which quickly spreads to disguise the squid. While the predator is momentarily...