http://www.article99.com/animals-pets/marine-life/ en-us http://www.article99.com/rss-feeds/ Article99.com http://www.article99.com/2007/10/11/fish-biology-55578.html BIOLOGY OF FISH Fish have some unique anatomical and physical characteristics that are different from mammals however they still possess the same organ systems that are present in other animals. All fish are poikilothermic and must be able to adapt to changes in water temperature. Fish live in a variety of temperatures ranging from less than 0andoslashC to hot geothermal springs. Yet each species of fish must live in its particular specific temperature range. Abrupt temperature changes can be lethal. Organ systems of fish vary to some extent from that of mammals due to the aquatic environment they live in. The following are some of the important differences. [...] tg nur raihan tg ngah 11 Oct 2007 17:09:58 EDT http://www.article99.com/2007/Oct/Thursday/fish-biology-55578.html http://www.article99.com/2007/02/23/the-most-frequent-species-of-turtles-in-the-spotlight-26890.html Turtles belong to the class of reptiles what makes the difference from others is the shell absent in other reptiles. The external shell is known as the carapace while the interior is known as the plastron.[...] Dalvin Rumsey 23 Feb 2007 16:52:34 EST http://www.article99.com/2007/Feb/Friday/the-most-frequent-species-of-turtles-in-the-spotlight-26890.html http://www.article99.com/2007/01/29/basic-sea-safety-8605.html Accidents can strike when you least expect them and more often than not about the only real defence you have in such circumstances is to be fully prepared for almost any eventuality. [...] Sonika Mishra 29 Jan 2007 09:32:31 EST http://www.article99.com/2007/Jan/Monday/basic-sea-safety-8605.html http://www.article99.com/2007/01/04/summary-on-sharks-21229.html Everything you wanted to know about sharks and more[...] John Pham 04 Jan 2007 09:01:59 EST http://www.article99.com/2007/Jan/Thursday/summary-on-sharks-21229.html http://www.article99.com/2007/01/04/guide-to-the-humpback-whale-21182.html Ever want to know-more about the great humpback[...] John Pham 04 Jan 2007 01:01:55 EST http://www.article99.com/2007/Jan/Thursday/guide-to-the-humpback-whale-21182.html