A blanket between armsSourced
A female octopus spreads a membrane when threatened
Blanket octopuses live in tropical and subtropical oceans. Adult females have long transparent webs between some of their arms. When threatened, a female can unfold these membranes, making herself appear much larger and helping deter predators.
What looks like a billowing blanket is part of the octopus.
Summary / translation: Unbubly · CC BY-SA 4.0
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Blanket octopus · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-10