Friday, January 8, 2010

Do sharks have a sense of taste, or do the only utilize smell and texture to decide on their meals?

Sharks don't have a sense of taste, but they have other senses which help them decide their meals.





Sense of smell : Sharks have keen olfactory senses located in the short duct between the anterior and posterior nasal opening, with the help of this olfactory senses they are able to detect as little as one part per million of blood in seawater.


Some species of shark like the nurse shark have external barbels( a slender whisker like tactile organ near the mouth) this barbels greatly increase their ability to sense preys.





Sense of sight : shark eyes are similar to the eyes of other vertebrates including similar lenses, corneas and retinas. Though their eyesight is well adapted to the marine environment with the help of a tissue called tapetum luccidum which increases their visibility in dark waters.





Sense of hearing : sharks have a sharp sense of hearing which enables them to hear preys from miles away.

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