<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/0ab04bd1-78da-42d8-9dd3-d19c5a565394/855B5EFD-26F8-41AB-ACF6-49C20CFBB67E/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html" href="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html" style="font-size: 11px;">dsc.discovery.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html"><P><STRONG>Nov. 19, 2008</STRONG> -- Biologists on Wednesday explained how the larvae of marine <A target="_blank" href="http://dsc.discovery.com/news/2008/11/17/plankton-continents.html">zooplankton</A> can see with just two cells, using what is believed to be the world's simplest vision system. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html"><P>Zooplankton are tiny creatures such as copepods and krill that drift in the ocean's water columns, swimming up from the depths towards the light in order to graze on marine plants called <A target="_blank" href="http://dsc.discovery.com/news/2008/11/17/plankton-continents.html">phytoplankton</A> near the surface. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html"><DIV id="twoColumnWidget"> <DIV id="headerITRZFlashObject"><a href="http://dsc.discovery.com/common/swf/headers/header-bar-324.swf" class="abp-objtab-0034728857210635344 visible ontop" title="Block this object with Adblock Plus"></a><div bgInactive="url(chrome://flashblock/content/flash.png) no-repeat center" bgActive="url(chrome://flashblock/content/flashplay.png) no-repeat center" title="/common/swf/headers/header-bar-324.swf" srcAttribute="/common/swf/headers/header-bar-324.swf"></div></DIV> <DIV><A href="http://dsc.discovery.com/news/2008/11/19/zooplankton-zoom.html"><IMG height="205" width="324" border="0" alt="Zooplankton" src="http://dsc.discovery.com/news/2008/11/19/gallery/zooplankton-324x205.jpg" /></A></DIV> <DIV class="standardWidgetPadding">I See... | <A target="_blank" href="http://dsc.discovery.com/news/video/">Discovery News Video</A> </DIV> </DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html"><P>This movement, called phototaxis, is the biggest biomass displacement in the world. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html"><P>In a study published by the British-based journal <EM>Nature</EM>, European scientists looked at the larvae of the marine ragworm <EM>Platyneris dumerilii</EM> to try to explain how plankton are able to do the phototaxis trick. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html"><P>The larva has just two eye cells, consisting of a pigment cell and a light-sensitive cell, say the investigators. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://dsc.discovery.com/news/2008/11/19/plankton-vision.html">The cells are unable to form images but enable the plankton to sense the difference between light and dark and send appropriate signals to its swimming mechanism</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/855B5EFD-26F8-41AB-ACF6-49C20CFBB67E/blog/" title="blog or email this clip"><img src="http://content6.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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