Introduction:
Both, Chthamalus and Semibalanus reside in different areas on the rock due to their levels of adaptation to a certain environment, and their interactions with the each other, limit where each barnacle species can live.

Methods:

In order to prove this hypothesis, it was important to prove that both the Chthamalus and Semibalanus are fully capable of living in the same environment by themselves. This was done by doing an exclusion experiment; whereby Semibalanus was first excluded from the rock for a period of 14 days and then the same procedure was completed for Chthamalus. The end result would measure the range of distribution in meters of each species on the rock (plot). Utilizing the SimUText program, all one has to do to complete this experiment is:

Set the WET AND DRY EXERCISE in the upper toolbar

Click on the EXCLUDE SEMIBALANUS button in the Exclusions panel on the right. RUN for 14 days. Observe.

3) Click on the EXCLUDE CHTHAMALUS button in the Exclusions panel on the right. RUN for 14 days. Observe.

The second experiment that was performed, was to see species interactions. Both species were to be shown living amongst each other on the same rock simultaneously. By running this test, one can measure the amount of each barnacle species residing on the different areas of the rock and visually see the species distribution. The distribution is measured by using SAMPLING tool located in the low toolbar. The measurements were taken by clicking on the 1m mark and on the 4m mark. Once again, the SimUText was utilized and the experiment ran for a period of 14 days as well. The procedure can be done by:

Click the RESET button to clear the rock of barnacles

2) Uncheck the EXCLUDE CHTHAMALUS and EXCLUDE SEMIBALANUS button in the Exclusions panel on the right. RUN the test for 14 days. Observe.

Results:
To begin, after completing the exclusion experiment, one can see from the data that both barnacle species, Chthamalus and Semibalanus , are capable of living in the same environment by themselves. However, Chthamalus is more well adapted for living in all areas of the rock; all of the intertidal zones. As one can see from looking at figure 1, by excluding Semibalanus, Chthamalus settles on the plot from the bottom 0m- 5m range. On the other hand, although Semibalanus was able to live on all areas of the intertidal zone, as shown in figure 2, its distribution was not as abundant as Chthamalus and and its range went from 0m-4m.