Writing with Scientists
Writing with Scientists Home Step 1: Discover Your Big QuestionStep 2: Explain the Hows and WhysStep 3: Present Your InformationStep 4: Conclude with New QuestionsStep 5: Show Your SourcesStep 6: Publish OnlineRead Student Writing Words to Know


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Brine Shrimp

By: Student Scientist B.
Kentucky, Age 9

Brine Shrimp
My Investigation

I am interested about the life cycle of brine shrimp. How do they form in the egg? What do they eat? How are baby brine shrimp born?
My Topic
I choose brine shrimp because I didnít know much about them. I was very interested in Brine Shrimp. I think it is cool to learn about new things you donít know about!
My Outcome
How could I successfully create a habitat for brine shrimp? How big do they get when theyíre fully grown? How do they form in the egg? I think brine shrimp need salt, water, and food to survive.

My Hypothesis
Brine shrimp need food, some were to live, and care to live.
What I Found Out
When the brine shrimp hatched I found out that they live in water. We put the brine shrimp in salt water but some may just live in plain water.
Here are my materials I used:
Rock Salt
Table Salt

Baking Soda

Brine Shrimp


In the study of brine shrimp we had two cups of salt water. In both of the cups we had brine shrimp. We put tags on both of the cups. One of the cups was Arvin 1 the other was Arvin 2. In Arvin 1, we put 4 scoops of plain salt and 2 scoops of rock salt. In Arvin 2, we filled the bottom of the cup with a lot of plain salt. We waited for about 2 weeks to see what would happen. When the brine shrimp hatched in Arvin 1 all of them hatched and some were dead. In Arvin 2 only a few hatched but they were dead. The rest of the brine shrimp havenít hatched.

What It Was All About
We explored that brine shrimp could live in some other type of water. Brine shrimp could maybe breathe above water. We found out that maybe older brine shrimp do not lay eggs. We looked up brine shrimp on the Internet and we found out that there are different types of brine shrimp.
Should I Keep Going
To learn more about brine shrimp, we could go to the ocean and study their habitat. We could watch the brine shrimp and see what they eat, how they eat, and how baby brine shrimp are born.
My New Questions
How do brine shrimp eat? How are baby brine shrimp born? I am interested in how brine shrimp live.

What I Would Have Changed
What I would have changed is instead of taking brine shrimp eggs and watching them grow I would have went to the ocean and studied there habitat or I would have went to the ocean and watched the older brine shrimp and see how baby brine are born. We already know that older brine shrimp probably do not lay eggs. Brine shrimp are interesting to learn about.

Scientist's comments

Hi Molly,

It sounds like you are going to be a good field biologist when you grow up Ė- you already understand that it is important to observe organisms in their natural habitats! However, in the meantime, experiments like the one you did are a good beginning in a controlled setting to understand more about organisms. You measured the salt very well in your first cup, but did you measure the salt in your second cup? Remember to only change one factor, or variable, in your treatments. That way you can tell if that one thing was responsible to the differences that you saw. Good luck learning more about the fascinating brine shrimp!

Susan Perkins