Author Archive | mdcvhs

Brine Shrimp Experiment

We did another experiment in my biology class with brine shrimp. This experiment was really time consuming it took a week to complete. I learned what brine shrimp were, they are really tiny creatures.

This experiment was really long and frustrating at sometimes. It was difficult to count and measure the brine shrimp because they were so tiny and they moved. We put approximately put 30 brine shrimp in three different solutions (tap water, water vinegar mix hot/cold) and measured their growth. I monitored the tap water subject while other members of my group monitored the rest. We left them under a heat lamp after we got done measuring their numbers and growth.

I learned a lot from this experiment such as what brine shrimp are, and how they grow. I enjoyed this experiment because it was fun to see the little shrimp swim around. I think I’ll check out a book about brine shrimp. Dalton R.

Food Web Game

In my biology class we played a game where each person picked one of four animals and choose whether to eat salps or eat krill. The animals that we available to choose were a penguin, bird, whale, fish. This game is pretty fun because it relates to what really happens in real life.

This game represents how animals compete for survival. The bird is probably the best animal to be because it can either eat salps or krill. So id\f you’re the bird you can decide who lives and who dies. We learned that there is not enough food for every animal if the sea ice keeps melting. The krill live under/in the sea ice and the krill disappear when the ice disappears

I enjoyed playing this Food Web game because to me it was educational and fun. Hopefully we will do another game like this in the future. My classmates and I really enjoyed this game and learned competition between animals. Dalton R.

Brine Shrimp

The brine shrimp experiment was showing how brine shrimp grew in different pH levels. We used three different types of solution which are regular tap water, warm water, and vinegar was the last type.  There were four of us in our group and we had ninety brine shrimp egg.

In this experiment we were trying to see what solution brine shrimp grew the best in. We found out that the more acidic the solution would kill off some of the brine shrimp. The regular water and the warm water were pretty close but the regular water grew a little more than the warm water. Overall the acidic and the warm water grew less brine shrimp than regular water. We think that they would grow better in cold water more than anything.

The brine shrimp experiment was good because it showed where brine shrimp grew the best. We were thinking that they wouldn’t grow good in the acidic solution. But we didn’t know whether or  not the warm water would grow good or not. Kenny F.

Brine Shrimp

We did an experiment on how brine shrimp would grow at different temperatures and different ph or acidity levels. And this is an important experiment on a small scale of the effects on the krill, which are vital food sources for many of the animals in the ocean.

We counted out 30 brine shrimp eggs then placed them in 1 of 3 different solutions. One jar contained hot water and vinegar, another contained cold water and vinegar and the last had tap water. We tested the growth of the shrimp, the ph of the water, and the temperature of the water every day before we started class. We stored the jars under a heat lamp. The acidity of the water has a great effect on the brine shrimp and their growth although the temperature has almost no effect on them; the brine shrimp in the more acidic solution grew slower and the ones in the less acidic water grew faster.

We tested the growth of the brine shrimp in different environments. We could have furthered our experiment by placing them in non-acidic water then start to make the water more and more acidic every day and see how the change affects them. Lexi G.

Shell pH

We did and experiment on how the acidity or ph affected the shells in the ocean and this is important because there are animals in the ocean that need their shells to survive and some of the other aquatic depend on the shellfish for a vital food source

We tested the strength of the shells with our biology books then placed the shells into 3 different solutions of Vinegar, Salt water, and tap water. The shells in the vinegar solution dissolved the clam shells completely because of the high acidity level of the vinegar but the scallop shells stayed completely intact

The ph or acidity level has a great effect on the shells. For a further experiment we could have added a bit of vinegar to the salt water to see if a low amount of acidity would dissolve the shells over a long period of time. That would prove that even a slight acidic level change in the water could affect the shells in a negative way. Lexi G.

Brine Shrimp Experiment

This experiment we did in Biology and in my Wildlife Management class. It resembled how brine shrimp grow in different conditions. Unfortunately, they all died both times.

In each experiment, we put about 30 shrimp in each jar. One jar was just tap water, the other was vinegar water, and the last was hot vinegar water. We observed them for a week. They grew for a few days and swam around a bit. In the end, they all died but we don’t really know why.

We didn’t notice which type of water they did best in, but they ended up dead in all of them. We think in Wildlife Management that they got to cold. We still aren’t sure what killed them. I wouldn’t have an idea of how to further this experiment. Allie T.

Shells and pH Experiment

This was the experiment we did in Biology with the sea shells and the pH of the water they were in. We soaked different shells and scallops in waters with different pH. This was to resemble the effect of pH on ocean creatures.

We soaked one shell and scallop in calcium water (ocean water), another set in vinegar water, and the other set in regular tap water. One of the shells disappeared. I’m guessing it dissolved in the vinegar water. We tested the shell and scallop strength by stacking books on top of them. It took a lot of books to break the shell and scallop in the calcium water.

The main idea was to represent that regular ocean water without any acidity is healthy for shells and scallops. The more acidic the water is, the less healthy it is for them. To further explore the topic, I would use different levels of acidity and actual ocean water. Allie T.

Brine Shrimp

The Brine shrimp were part of an experiment that we had to do in biology class. We were forced to do for this to test the Ph and the temperature of the water. I do not think that the shrimp did not get enough light to develop.

Most groups seen results with their shrimp but we did not.  Our group had too many shrimp in one jar so none of them grew or even had a chance to grow so they all died I think without that many brine shrimp in one jar they would have grew more than they did with the overpopulated area in the small jar. It probably did not help that every day they would get barley any light because everyone else would move our jar away from the light so that did not help either.


I think that the shrimp died in our experiment because we probably over populated the jar with too many shrimp there were supposed to be 15 per jar we had close to 35-40 shrimp per jar so they were slightly over populated.  The other problem I though was they were not getting enough light to grow and the water was not warm enough for them to grow. Nick W.

Brine Shrimp Experiment

We did an experiment in biology to see under what conditions brine shrimp are able to thrive and grow.  We had three different solutions that we put the brine shrimp in. We put a specific amount in each container. This experiment is important because we know that the krill in the Antarctic are decreasing in population due to a decrease in sea ice caused by rising pH levels. This decrease in krill has caused a decrease in Adele penguins. This has become a major concern for scientists so they have decided to conduct experiments to more understand what is taking place.

With our experiment we had three different solutions, tap water, vinegar and water and vinegar and hot water. We learned that the shrimp grew best in the regular water. Every day we took count of the shrimp, we took pH levels and temperature.  The three bottles were kept under a heat lamp the entire time. The temperature in the three bottles changed by about 5 degrees every time but the pH levels did not change. The shrimp in the vinegar water died in the end.

The main idea of this experiment is to see how the shrimp react to the different environments. I believe the experiment gave us some insight into how the krill react to the rising pH levels in the Antarctic because not only are the pH levels rising but so are the water temperatures. Alexa C.

Shells and pH acidity

In Biology class we did an experiment to test acidity levels in the ocean. We need to understand what is happening in our environments and to do that we are conducting experiments with different acidity levels. As time has gone on the atmosphere has become more polluted with Co2 raising pH levels. This is important because it can affect organisms and how they live, for example. Shells in the ocean are a food supply for shore animals and if the acidity level is too high it could affect the growth of them virtually eliminating that food source.

To find the strength of the shells we stacked books on each to see how much weight it took to break them. The clam broke first and then the scallop, many of us thought that the clam would be stronger but it wasn’t. We made the assumption that the scallop was stronger because of the ridges in the shell. We also tested the shells reaction to different pH levels, so we put them in three different types of liquid; vinegar, salt water and tap water. We left the shells in the jars of liquid for about a week and the clam dissolved in the vinegar and the scallop was half dissolved. The shells in the other solutions had not dissolved.

The main idea is to see if rising pH levels in water will affect the organisms living in the water. We need to know and understand what we can do to keep the pH levels from rising in the water, so we are not killing off food supply and other organisms. Alexa C.

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