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Photos: Mesmerizing life under water

Photos Logo Photos | Slide 1 of 51: An underwater image of a Porcupine fish (Diodon hystox) which is a type of puffer fish.  The name comes from their ability to puff their venomous spines up as a defence mechanism, if threatened.  They are also known as Balloonfish.  These fish are known to be very friendly with and curious of, scuba divers.  Image taken whilst scuba diving in the Andaman Sea, Thailand.

Porcupine fish (Diodon hystox) in the Andaman Sea, Thailand.
© Placebo365/Getty Images
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