• 1.800.860.6272
  • Shopping Cart

    There are 0 items in your cart.

    You have no items in your shopping cart.

    Cart Subtotal: $0.00

    Home / Science projects / Brine Shrimp Project
    • Brine Shrimp Project

      Brine Shrimp Project

      Our brine shrimp eggs come in a vial with enough eggs to hatch many batches of brine shrimp, which makes them a great subject for science experiments or science fair projects. With some extra items like petri dishes and a 10x magnifying glass or stereo microscope, you can easily create a complete unit study.

      What Are Brine Shrimp?

      Brine shrimp are crustaceans that are classified in the phylum Arthropoda (the largest phylum in the animal kingdom, which includes insects and other creatures with jointed legs and exoskeletons). They live in inland bodies of saltwater, such as the Great Salt Lake, but not in the ocean, where they would have too many predators.

      The female brine shrimp lays encapsulated eggs, or cysts, which remain dormant until the right hatching conditions. These eggs can survive for years when dried and then, when added to salt water, hatch literally overnight! The hatched shrimp larvae are called nauplii (singular is 'nauplius') and have a different anatomical structure than adult brine shrimp. A nauplius has only one eye, called a nauplier eye and has an extra pair of antennae with hairlike setae for swimming. The nauplii molt, or shed their exoskeleton, about 12 hours after hatching. This brings them into the second larval stage. After several more moltings, they reach the adult stage; it only takes about eight days to mature from the time they hatch. (You can see an early nauplius stage in this picture of a brine shrimp.)

      Adult brine shrimp have a pair of compound eyes as well as the nauplier eye. They also have 11 pairs of phyllopods or leg-like appendages. The structure of the phyllopods are designed for different functions: some are for swimming and the others are for scraping and filtering algae (the shrimp's primary food source).

      Mature brine shrimp might grow to as much as half an inch in length and live for up to three months.

      Hatching & Raising Brine Shrimp

      Use a glass container as a hatching tank for the brine shrimp, either a wide-mouth quart jar or a shallow glass pan at least two inches deep (this will work best). Fill the container with one quart of salt-water solution: mix 1 to1-1/2 teaspoons of sea salt mixture or non-iodized table salt per cup of bottled water. (If you want to use tap water, let it sit for an hour so the chlorine settles. You can also use rock or aquarium salt.) The shrimp will die in salt water that is either too weak or too strong.

      Sprinkle about one sixteenth of a teaspoon of brine shrimp eggs into the dish: you don't need to cover more than one square inch on the surface of the water. Leave the container in a room where bright sunlight can reach it. Your brine shrimp should start hatching in just 24 hours!

      The shrimp will live 1-3 days without food. If you want to keep them longer for a more in-depth study, feed them a very tiny amount of yeast - a few 'grains' as needed. You might also need to change the water occasionally, if it gets cloudy. Clean out unhatched eggs from the top of the container, which will allow more oxygen to get into the water.

      Observing Brine Shrimp

      You can study your brine shrimp close up with a magnifying glass, stereo microscope, or compound microscope. Use a pipet or medicine dropper to 'catch' some of the shrimp and transfer them with sufficient water into a petri dish for easy observation. Look at them closely with low power (10-30x) magnification. What parts of the brine shrimp can you identify? What are their swimming habits? Eating habits? How do they use their phyllopods? How do they respond to light? If you can, compare the larval stage with the adult stage. Keep track of your observations in a notebook and include sketches of the shrimp.

      With a compound microscope, you can see a specimen at much higher magnification (40-400x). This will allow you to see details like the hairlike setae on the phyllopods. Make a wet mount slide by adding 1-3 drops of water with a brine shrimp onto a concave slide, and placing a slide coverslip over it. You can keep track of your observations with our printable microscope worksheet.

      Brine Shrimp Experiments: Effect of pH and Environmental Changes

      Learn about the effects of the surrounding conditions on brine shrimp! To start, test the pH level in the brine shrimp's tank water: ideal conditions are a pH of around 8, but no lower than 5 and no higher than 10. Use pH paper for the test. To raise the pH level in the tank, add a little bit of baking soda.

      Discover more with a project where you change the tank environment by adding pollutants. Transfer about an equal number of brine shrimp to several petri dishes to be your test samples. Try adding 1-3 drops of a different solution to the water in each petri dish: vegetable oil, soap, vinegar, ammonia, or anything else that comes to mind. Observe the samples at low power magnification and record what's going on. How do the pollutants affect the sample? Is there a difference visible in twenty minutes? One hour? Three? How might you counteract the pollutants?

      You can also try hatching several batches of shrimp at a time, using different hatchery conditions for each batch. Fill 3-4 petri dishes with different solutions: you might use plain tap water, water with a low pH (acidic), and regular salt water to be the control that you can compare the results to. Before you start, hypothesize which solution will have the best results and which will have the worst. Sprinkle a small amount of eggs into each dish. After 24 hours, check on the dishes again. Has anything happened? What are the results after 48 hours? 72 hours? Use a magnifying glass for your observations, and make sketches. Were you right about which solutions would work best and worst? How do you think factors such as temperature (colder or warmer) or more or less light might affect the hatching success rate of the brine shrimp?

    « Previous Article: Biology Science Fair Projects

    Next Article: Introductory Microscope Experiments »

    « Previous Article: Storms

    Next Article: Ocean Animals Worksheet »


    By: Adamari N Vaknin
    Date: Jun 25, 2017

    Im experimenting with growing brine shrimp in a vacuum.  Anyone tried this yet

    By: Harry
    Date: Jun 12, 2016

    I’ve discovered that shrimp can survive chemicals.

    By: chickens
    Date: May 10, 2016

    What are you guys doing ? I tried and the shrimp died as soon as they hatched.

    By: unknown
    Date: Jan 20, 2016

    This project is so frustrating guys… The brine shrimp aren’t freaking hatching and ughhhh… make sure you get the pH right and don’t put too much pollutant in. And the brine shrimp are hard to count for a control number of brine shrimp… so beware :)

    By: unknown
    Date: Oct 13, 2015

    i have a brine shrimp project does ant body know how they produce waste

    By: Unknown
    Date: Sep 04, 2015

    I’m doing brine shrimp for my science project! So excited!

    By: fjfufuf fueiekf
    Date: Apr 25, 2015

    What you guys are doing wrong is that the shrimps breathe air so poke a hole in the top

    By: Edward marshall
    Date: Feb 20, 2015

    I hatch my bring shrimp In a 2 litter soda bottle in 24 hours then I transfer them in a 10 gallon tank with 6 gallons of water the shrimp last about 5 days then they die is there something I’m doing wrong I also use Kosher or sea salt I feed them raw organic spirulina powder

    By: antoino manzanares
    Date: Jan 07, 2015

    this sight rocks

    By: tiffany
    Date: Aug 30, 2014

    I forgot to let the water sit for and hour. Will they still hatch?