tag:blogger.com,1999:blog-15552772843691840512024-03-18T22:47:29.184-07:00The 7 Senses of a SharkGeorgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-1555277284369184051.post-15211728740934003192012-04-27T12:12:00.000-07:002012-04-27T12:12:07.447-07:007th SenseThe seventh sense is the pressure sensors. <span class="mnav"><span class="body"></span></span><br />
<span class="stdbigger">Lateral line</span><br />
<span class="bodystd">The lateral line system of sharks extends from the head to the caudal fin. It contains sensory cells embedded in jelly and is connected to the skin surface by small pores. The jelly conducts shock waves to the sensory cells.</span><br />
<br />
<span class="stdbigger">Pit Organ</span><br />
<span class="bodystd">The pit organ consists of two oversized denticles which cover a small pocket in the skin. At the bottom of this pocket is a collection of sensory hair cells. Many sharks have these pit organs in greater numbers on their backs, sides and lower jaw. The exact function of the pit organ has not yet been determined, but most likely sharks use it to register mechanical stimuli such as water currents.</span>Georgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.com0tag:blogger.com,1999:blog-1555277284369184051.post-1313181114532831302012-04-27T12:08:00.000-07:002012-04-27T12:15:07.932-07:006th Sense<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyJaYSF1qRRmxxNOReSpihwkpYY0vMYs-SkfIjFfqBKnx88Y9G-o7kQtLJc0IG7PLu_5A0rzl9sIPeVn06qvXsDiTYNo03VlpeVjsZASKhLTq_3sea7lbY1-uV0bSx9v542fqsCWPofKQ/s1600/Seitenlinie.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyJaYSF1qRRmxxNOReSpihwkpYY0vMYs-SkfIjFfqBKnx88Y9G-o7kQtLJc0IG7PLu_5A0rzl9sIPeVn06qvXsDiTYNo03VlpeVjsZASKhLTq_3sea7lbY1-uV0bSx9v542fqsCWPofKQ/s1600/Seitenlinie.jpg" /></a></div>
The sixth sense is touch. <span class="mnav"><span class="body"><span class="bodystd">Shark skin has highly sensitive pressure and temperature sensors, some of which are so sensitive that they can register skin vibrations/movements of only 0.02mm. With these sensors sharks can feel contacts, water currents and temperature changes.</span></span></span>Georgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.com0tag:blogger.com,1999:blog-1555277284369184051.post-1500937157278681062012-04-27T12:06:00.000-07:002012-04-27T12:06:43.284-07:005th Sense<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOv1nkAgkAN9-opweMOe2rZQ5XtmzIic2L4ZrRjkgd8HuajFjClF0deZ1xIMgFXiMCJVGQpNfiEolhbCIMfOK-oFwN5MiPGzkgvm3rT5seNwXPDvwaq_xxFT3lHOb0zLhgvLQM0ynTvNU/s1600/Ohr.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOv1nkAgkAN9-opweMOe2rZQ5XtmzIic2L4ZrRjkgd8HuajFjClF0deZ1xIMgFXiMCJVGQpNfiEolhbCIMfOK-oFwN5MiPGzkgvm3rT5seNwXPDvwaq_xxFT3lHOb0zLhgvLQM0ynTvNU/s1600/Ohr.gif" /></a></div>The fifth sense is hearing. <span class="mnav"><span class="body"><span class="bodystd">Sound travels under water about four times faster than on land, whereby low frequencies dissipate slower than high ones. The sense of hearing is thus important to sharks. They react especially to low frequency, pulsating oscillations around 100 Hz, as produced by sick or wounded animals. Several shark species can thus accurately locate their prey over a distance of several hundred meters.</span></span></span>Georgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.com0tag:blogger.com,1999:blog-1555277284369184051.post-43049767777359013392012-04-27T12:03:00.000-07:002012-04-27T12:03:16.107-07:004th Sense<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijQLojOWNM11W8SKOK-KCyXrG0KBxM1aLyFqFIs4IbO863aAqS4Elf_AMpTSWmPobHBn4SLfhNjLXQiC6HhzAlIb231N9geiTYoL_fLfXHHu1jXO7NcCwT1ql-HV7vvMpSOh2nPMhbpQ8/s1600/LorenzAmp.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijQLojOWNM11W8SKOK-KCyXrG0KBxM1aLyFqFIs4IbO863aAqS4Elf_AMpTSWmPobHBn4SLfhNjLXQiC6HhzAlIb231N9geiTYoL_fLfXHHu1jXO7NcCwT1ql-HV7vvMpSOh2nPMhbpQ8/s1600/LorenzAmp.jpg" /></a></div>he forth sense is the electrosenses. <span class="mnav"><span class="body"><span class="bodystd">Probably the most fascinating sensory performance of sharks is their ability to detect electrical fields. All living things emit electrical fields, either with the beat of the heart, muscle movement or with the brain. Animal prey can effectively hide or camouflage themselves, but they cannot conceal their electrical fields.<br />
The shark's electrosensor are its Lorenzini ampoules. Only sharks or rays have them. They consist of the ampoule and a long canal filled with a jelly-like substance which ends in a pore. Hundreds of such pore groups are located on the shark's head, especially in the region of their snout. Since the electrical impulses of prey animals are very weak, the electrosensors only function within a range of several centimeters.</span></span></span>Georgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.com0tag:blogger.com,1999:blog-1555277284369184051.post-26334391899862547092012-04-27T12:01:00.000-07:002012-04-27T12:01:12.617-07:003rd Sense<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg871ulLdUbqzTNCXDofRPjJ28FDEGhjnQUHpqHjMAmJIf6Qwv_z56uQVDJB8htbxiNxDsaRO0x-TSQ9BjArB00kovbVoMEH3OsXG_TcNqEb-gwalzP_gWqgEAOqqwxWBjzTTxCCfqMAJU/s1600/PorbeagleSharkTeeth001.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="212" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg871ulLdUbqzTNCXDofRPjJ28FDEGhjnQUHpqHjMAmJIf6Qwv_z56uQVDJB8htbxiNxDsaRO0x-TSQ9BjArB00kovbVoMEH3OsXG_TcNqEb-gwalzP_gWqgEAOqqwxWBjzTTxCCfqMAJU/s320/PorbeagleSharkTeeth001.jpg" width="320" /></a></div><span id="goog_1581603058"></span><span id="goog_1581603059"></span><span class="mnav"><span class="body"><span class="bodystd">The third sense is taste. <span id="goog_1828850932"></span><span id="goog_1828850933"></span>The decision on whether or not to eat a prey depends on how it tastes. Sharks have a very good sense of taste so it is not astonishing to hear about their tendency to first try anything unknown to them before eating it completely.</span></span></span>Georgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.com0tag:blogger.com,1999:blog-1555277284369184051.post-79959646584282718562012-04-27T11:52:00.000-07:002012-04-27T11:52:39.727-07:002nd Sense<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgVW10wvPwD5f4N2wQW5loGZ5s7TYDm2yhTK5Iq0fgfjt0GIVoNfDb4M5vtE6pDMaoVJRysDwEiQ0p_BfxeejAv2pPBhZIDsly3jThZkx8q1dL1u52unX9jy9qdzITyw04wxGMRauvEcDc/s1600/Nase-Mund.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgVW10wvPwD5f4N2wQW5loGZ5s7TYDm2yhTK5Iq0fgfjt0GIVoNfDb4M5vtE6pDMaoVJRysDwEiQ0p_BfxeejAv2pPBhZIDsly3jThZkx8q1dL1u52unX9jy9qdzITyw04wxGMRauvEcDc/s1600/Nase-Mund.jpg" /></a></div>The second sense is scent. <span class="mnav"><span class="body"><span class="bodystd">The shark can smell certain substances 10,000 times better than humans, and can locate the smell of prey accurately over hundreds of meters.</span></span></span>Georgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.com0tag:blogger.com,1999:blog-1555277284369184051.post-37474582264910282132012-04-27T11:48:00.000-07:002012-04-27T11:48:40.136-07:001st Sense<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2vevAohqfvqbZF_R5RpDQ8uGqqEWmaPKw-P5m4-i4xsD0se1dJzIiR3_y3Hk_cx3ZHQW4oYQ7q991Hjiyrh0QsRP813Sla-Xw9TB5yPHAuGA6DrA90TQra3BrHD76fnQJiguI4ks8oFU/s1600/Auge_en.gif" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2vevAohqfvqbZF_R5RpDQ8uGqqEWmaPKw-P5m4-i4xsD0se1dJzIiR3_y3Hk_cx3ZHQW4oYQ7q991Hjiyrh0QsRP813Sla-Xw9TB5yPHAuGA6DrA90TQra3BrHD76fnQJiguI4ks8oFU/s1600/Auge_en.gif" /></a></div>The first sense of a shark is vision. Sharks have excellent eye sight. A shark can see under water from an immediate range of 0-50 meters, depending on water conditions. In addition, colors are absorbed more strongly further down. <span class="mnav"><span class="body"><span class="bodystd">Sharks have developed methods of amplifying light in their eyes which make them more efficient than such night-hunting mammals as cats, foxes or wolves. </span></span></span>Georgia Roanhttp://www.blogger.com/profile/05102058713644344793noreply@blogger.com0