By: Cooper, Taylor, Brooke, and Nicole.

 Squid  Cuttlefish  Octopus  All of these animals are carnivorous.  The nervous system and sense of vision are highly devolved in all of these animals.

 The chambered nautilus lives in tropical water. This animal usually lives where the slopes of coral reefs descend into deep waters. During the day, its in water that is 900 to 2,000 feet deep. At night, the nautilus comes up too 300 to 500 feet deep of water so it can feed.  The Chambered Nautilus lives in a shell.  The outside of the shell is cream- colored and brown striped. The shell is made out of aragonite which is a carbonated mineral.

 Nautilus are scavengers. They eat molts of lobsters, hermit crabs, and carrion of any kind.  Triggerfish, sea turtles, sharks, and squids eat the chambered nautilus.  They capture their food with their tentacles, since they have little energy for swimming. They only need to eat once a month.

 The nautilus moves by shooting water out of its hyponome (funnel). Since it lives in a hard shell it does not have a muscular mantle. Instead it has a flap on its hyponome that when it is closes increases the velocity of water moving out the funnel.  reproduces sexually ◦ The males have four tentacles that is modified into an organ that moves the sperm into the females mantle while mating. The female then fertilizes the egg.

 No, this species does not have an impact on Iowa or the Midwest, because there are no oceans around us and that’s mainly where they live.

 The nautilus has an unusually long life span for a cephalopod. It takes several years to reach sexual maturity and may live more than 15 years.  They don’t have very good eyesight.  They are the most common captured species.  First appeared over 500 million years ago.  Remained virtually unchanged for millions of years.

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