Today began like all the others with two article presentation. The first article was very interesting. It involved the mimic octopus and it’s evolution. The mimic octopus has, over time, developed adaptations in order to allow it to survive. Theses adaptations involve things such as mimicking a flounder swimming, a lion fish, and in desperate times, even a sea snake. The evolution of these adaptations was determined by using DNA sequencing of 36 related species. After listening to this presentation, Harrison and David discussed the affect of tourism on the white shark in seal island. The article measured the affect of giving the sharks chum to their behavior. The behaviors tested involved depth and distance. The results determined that the chum did not have an affect on the sharks, however, the boat’s presence may have influenced the sharks. We decided that there were flaws in this article and it could be better tested if this hypothesis was tested in other places highly populated with sharks. After these two presentations we went ton the lab to begin the dissection of the perch and shark. The perch was fairly easy and we were able to find the location of most of the body parts. The perch was also fairly simple and easy to dissect. After this we dissected a dogfish shark which was much more interesting. Before starting the dissection, we noticed that the dogfish shark felt very leathery. The dissection begs n by removing the dorsal spine. Once this was removed we proceeded to investigate the shark. The organs were very easy to find once it was open and we were able to determine that ours was a female. The sharks head was also interesting because I found the position of certain body parts to be peculiar In relation to a human part.
