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Starfish

Nathan Fuentes Marin And Danny Vargas

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Why Did Nathan And Danny Want to Do a Starfish dissection

The main reasons we want to do this are:

  • To see how starfish work
  • To understand their anatomy
  • Starfish are really interesting

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Objective

To determine how complex the starfish really is and demonstrate basic dissection skills

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Background Information On Starfish

  • There are about 2,000 species of starfishes
  • Some live in the intertidal zone some in deep water some in tropical areas,some in cold water
  • When a starfish loses its arm they can generate a new arm

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More Background information

  • Starfishes skin may feel leathery or slightly prickly and starfish have a tough covering on their upper side
  • Starfish do not have blood; instead they have water vascular system
  • Starfish move using hundreds of tube feet which are located on their underside so they can walk

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Even More Background Information

  • Starfish have eyes but they can’t see that well
  • Sea stars eat with their stomachs inside-out

Starfish predators are shark, manta rays, alaskan king crabs,and Starfish

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Quiz

  1. What happens to starfish when one of his legs get chopped off?

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Answer : The legs regenerate back.

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2. How do starfish walk?

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Quiz

Answer: They use their tube feet.

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Quiz

3. Instead of blood what do they have in their body?

Answer: starfish have a water vascular system.

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Quiz

4. Do starfish have eyes? If they do can they see well?

Answer: Yes, but they can barely see anything.

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Quiz

5. What are the major predators of starfish?

Answer: the starfish predators are sharks,manta rays, alaskan king crabs, and other starfish.

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Links to Starfish Dissection Videos

Use these videos to guide you through your own dissection. Try to identify all of the major anatomical features highlighted in the videos.

  • Introduction to Sea Star Dissection
  • Advanced Dissection and Investigation of a Sea Star

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http://marinelife.about.com/od/invertebrates/tp/seastarfacts.htm

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http://www.teachertube.com/video/sea-star-anatomy-part-1-288283

http://animals.pawnation.com/common-starfish-predators-3346.html

http://giphy.com/search/starfish

http://www.smithsonianmag.com/science-nature/fourteen-fun-facts-about-squid-octopuses-and-other-cephalopods-45444510

http://animalfunnyfacts.blogspot.com/2013/10/squid-some-interesting-facts.html

http://www.pbslearningmedia.org/resource/4ab6c77b-4aa4-450f-a25c-4ebae8bc1180/detailed-sea-star-dissection-video-part-ii/

Sources