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A group of jellyfish is called a bloom, swarm, or smack. @googlefactss#nowyouknow

Jellyfish move in essentially two ways. They take water in their bell and then squirt it out behind them, which creates a jet of water that moves them forward. They also drift on water currents. @googlefactss#nowyouknow

Horseshoe crabs are not crabs at all. They are not even crustaceans. Instead, they have their own separate class named Merostomata. They have hardly changed since the age of the dinosaurs, and their closest-living relatives are spiders @googlefactss#nowyouknow

Blind people smile even though they have never seen anybody else smile. Facial expressions like smiling are largely innate and biological, not just learned through visual imitation and not learned at all. @googlefactss#nowyouknow

Stan is an ancient Persian word meaning “land” or “nation,” and Kazakh means “wanderer,” “adventurer,” or “outlaw.” Therefore, the name Kazakhstan translates as “Land of the Wanderers. @googlefactss#nowyouknow

In terms of absolute size and in proportion to overall body mass, the human penis is longer and thicker than that of any other primate. For instance the average size of the human penis is 8-10 cm when flaccid and 13-15 cm when erect while gorillas, which are the largest primates, have a penis size of approximately 4 cm in length when erect. @googlefactss#nowyouknow

The colors of fire hydrants give a reasonably accurate picture as to how much water flow and pressure they can provide @googlefactss#nowyouknow

The position dogs assume when they are inviting other pets to play is called a play bow. @googlefactss#nowyouknow

The historical figure who inspired the Santa Claus legend, Saint Nicholas, was born in Patara, Turkey, in the 3rd century A.D. @googlefactss#nowyouknow

Greek philosopher Aristotle (384–322 BC) thought the heart, not the brain, was the center of mental functions, emotions, and intellect. He considered the heart the core of the body's "psychical fire" and the source of its heat, with the brain's main role being to cool the blood. @googlefactss#nowyouknow

The al-Qarawiyyin Library in Fez, Morocco is the oldest working library in the world. It was founded in 859 CE by Fatima al-Fihriya. @googlefactss#nowyouknow

Napoleon I banned fashion dolls because he was nervous they could be used to send secret messages. [Read more] @googlefactss#nowyouknow#history