Cuttlefish given 3D glasses to determine how they judge distance

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A team of researchers have strapped a pair of 3D glasses to an unsuspecting cuttlefish and set it loose in an underwater movie theatre to work out how the marine molluscs know how far away their prey is before launching an explosive, tentacled attack Subscribe to Guardian News on YouTube ► Support the Guardian ► Today in Focus podcast ► The Guardian YouTube network: The Guardian

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