Spot-fin porcupinefish

(Diodon hystrix) The porcupinefish is found in all the tropical and subtropical waters of the world, including the Mediterranean Sea. Its diet is based on Sea urchins, gastropods and crustaceans. When threatened, they can puff up to make themselves up to three times larger. Pufferfish are among the most poisonous animals on earth. They can eat almost anything that is edible.