Terms: shrimp
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• Science > Biology > Fish and Ocean Creatures > Shrimp

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1. Mantis Shrimp (Blueboard.com)
   Describes the marine crustacean, which is not really a shrimp. Known for its deadly "'mantis-like" front claws. "Smashers" have the striking force of a .22 caliber bullet and can break aquarium glass or do great damage to a hand. "Spearers" can use their front claws as powerful spears that move faster than the human eye can see. Shows the claws of each, as well as the overall structure of the animal.
   "The mantis shrimps are also world-renowned as having the world's most sophisticated vision. According to Dr Justin Marshall, the stomatopod eye 'contains 16 different types of photoreceptors (12 for colour analysis, compared to our 3 cones), colour filters and many polarisation receptors, making it by far the world's most complex retina.' Mantis shrimps can thus see polarized light and 4 colors of UV (ultraviolet) light, and they may also be able to distinguish up to 100,000 colors (compared to the 10,000 seen by human beings)." 1-02

2. Mantis Shrimp (Woodward)
   Describes the marine crustacean, which is not really a shrimp. Known for its deadly "'mantis-like" front claws. "Smashers" have the striking force of a .22 caliber bullet and can break aquarium glass or do great damage to a hand. "Spearers" can use their front claws as powerful spears that move faster than the human eye can see. 5-01

3. Fertilizers Creating a Huge "Dead Zone" in the Gulf (MSNBC News)
   "The nation's corn crop is fertilized with millions of pounds of nitrogen-based fertilizer. And when that nitrogen runs off fields in Corn Belt states, it makes its way to the Mississippi River and eventually pours into the Gulf, where it contributes to a growing "dead zone" — a 7,900-square-mile patch so depleted of oxygen that fish, crabs and shrimp suffocate." 12-07

4. Enormous Dead Zone in the Gulf (CNN News)
   "Scientists have recorded one of the largest 'dead zones' in the Gulf's history this year. This oxygen-sapped area -- currently about the size of New Jersey -- is caused in large part by fertilizer that funnels into the ocean from Midwestern farms, since more than 40 percent of the land in the United States drains into the Gulf."
   
   "The fertilizer kicks off a chain reaction of biological processes that, in the end, drains the water of oxygen and kills fish, shrimp and other marine creatures that can't swim away."
   
   "Early testing indicates that the ocean ecosystem is already under intense stress: It takes less fertilizer pollution today, for example, to produce a large dead zone in the Gulf than it did several years ago."
   
   "That's a sign that the dead zone will continue to grow unless fertilizer levels are cut drastically." 08-10