Vampire squid a human's inner ear) and ammonium-rich gelatinous tissues closely matching the density of the surrounding seawater. Like many deep-sea cephalopods, the vampire squid lacks ink sacs. If disturbed, it will curl its arms up outwards and wrap them around its body, turning itself inside-out in a way, exposing spiny projections. If highly agitated, it may eject a sticky cloud of bioluminescent mucus containing innumerable orbs of blue light from the arm tips. This luminous barrage, which may last nearly 10 minutes, would presumably serve to daze would-be predators and allow the vampire squid to disappear into the blackness without the
Vampire squid If a predator were to bite off an arm tip, the vampire squid can regenerate it. They have eight arms but lack feeding tentacles, and instead use two retractile filaments in order to capture food. They combine the waste with mucus secreted from suckers to form balls of food. They feed on detritus, including the remains of gelatinous zooplankton (such as salps, larvaceans, and medusae jellies) and complete copepods, ostracods, amphipods, and isopods. Vampire squids have been found among the stomach contents of large, deepwater fish, including giant grenadiers, and deep-diving mammals, such as whales and sea lions. The Vampyromorphida