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shark
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Shark

Senses
• Smell
Sharks have keen olfactory senses, located in the short duct (which is not fused, unlike bony fish) between the anterior and posterior nasal openings, with some species able to detect as little as one part per million of blood in seawater. They are more attracted to the chemicals found in the guts of many species, and as a result often linger near or in sewage outfalls. Some species, such as nurse sharks, have external barbels that greatly increase their ability to sense prey.

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Filename:343873.jpg
Album name:Fauna & Flora
Rating (1 votes):55555
Keywords:#shark
Filesize:66 KiB
Date added:Dec 14, 2010
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