An unusual characteristic that distinguishes dwarf sperm whales and pygmy sperm whales from other cetacean species is the use of the “squid tactic.” In the lower portion of the intestine, there is a sac filled with viscous, dark reddish-brown liquid. A dwarf sperm whale is capable of ejecting more than 3 gallons (12 liters) of this liquid when it feels threatened or when trying to evade predators. Similar to squid and other cephalopod species, the “ink” creates a dense cloud that may discourage predators and/or causes a confusing diversion, allowing the whale to escape.
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