A detailed anatomical diagram and description of the Babel Fish from The Hitchhiker's Guide to the Galaxy.

A cross-section diagram of the Babel Fish with various internal organs labeled, such as 'Telepathic Excreter' and 'Unconscious Frequency Sensors'. Below the image is a block of text describing the creature's function in translating languages.

THE BABEL FISH DIGESTIVE NERVE CHORD TELEPATHIC EXCRETER BRAIN GAS BLADDER ENERGY ABSORPTION FILTER OLFACTORY BULB EXTENDABLE metacortex NERVE SIGNAL SENSOR LIVER GILL RAKERS HEART DIGESTION UNCONSCIOUS FREQUENCY SENSORS UNCONSCIOUS FREQUENCY SENSORS The Babel fish is small, yellow, leech-like, and probably the oddest thing in the universe. It feeds on brain wave energy, absorbing all unconscious frequencies and then excreting telepathically a matrix formed from the conscious frequencies and nerve signals picked up from the speech centres of the brain, the practical upshot of which is that if you stick one in your ear, you can instantly understand anything said to you in any form of language