The Cookiecutter Shark or Isistius brasiliensis is a small shark that grows to about 50cm (20") in length.. The shark's body has a cigar shape and is sometimes referred to as the Cigar Shark. This shark is also called the Luminous Shark because of its use of bio-luminescent. Found at depths of 1,000 m or 3,300 ft the Cookiecutter Shark is rarely seen by humans so little is known about their reproductive habits.
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