アメリカ自然史博物館のインスタグラム(amnh) - 8月17日 01時57分

Meet the vampire squid, a cephalopod that lives at depths sunlight never reaches, 2,000 to 4,000 feet below the surface of the ocean. Their two fins flap like wings to propel them through the water while their large eyes—the largest, relative to body size, of any known animal—help them detect the dim light generated by bioluminescent organisms and navigate their dark environment. When a predator threatens, a vampire squid thrashes around, waving its bioluminescent arm tips and ejecting luminescent mucus to confuse its attacker—giving the squid an opportunity to swim away. To hide, this vampire pulls its webbed arms over its head so that only the dark inner side of its “cloak,” which covered in fang-like projections, or cirri, is exposed.
Illustration: Vampyroteuthis infernalis from Joubin's Resultats des Campagnes Scientifiques accomplies sur son yacht, 1920

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