The Sand Tiger Shark is one of the most commonly used sharks in aquarims because of their large size and tendency to do well in captivity. Their natural enviroment are shoreline habitats, and they are often seen trolling the ocean floor in the surf zone, very close to shore. They are found in warm or temperate waters throughout the world's oceans, except the eastern Pacific. They can grow from 6 - 12ft long with a weight of 210 - 260lbs. They feed on a varitey of fish because of the different oceans they live in. Sand Tigers are the only know shark that are gulpers (they come to the surrface to take gulps of air to help with thier boyancey) but they keep the air in thier stomach which allows them to float motionless in the water when sureching for food. They have one of the lowest reproduction rates in all sharks. In the womb sand tiger sharks will acutally turn canibalistic if one of the sand tiger pups is developed faster then the others. Sand Tiger sharks are a docile, non-aggressive species, known to attack humans only when bothered first.
Over my spring break, i went to Normandy France. It was alright, it wasn't the warmest place on earth to go for spring break but it was fun. The inventory of our fish tank is the same. Our Fish have not had babies yet which makes me sad. Anyways i think the only thing that has had babies are the starfish because we have found a ton lately. Fish and marine animals belong to the subphylum Vertabrata. Animals in this subphylum have a backbone/spinal cord. Hagfish -Lauren
Invertebrates: An animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc
Characteristics: -Lack backbone -97% of species alive -Multicelluar -No cell wall The organisms that Lauren and I dissected were: Starfish, Jellyfish, Sea Squirt, Sea Sponge, Squid, and Clam. When Lauren and I dissected the starfish it was very challenging because not only was the exterior rough but the parts of it were very close together. So when we had to use the scalpel to cut down one of the rays it was hard to keep the cut open to inspect the insides. It was also difficult to find the different parts as well. All in all though, the starfish was one of the best labs we did. Dissecting the jellyfish was not challenging at all compared to the starfish. However, in a sense, not having alot to dissect made it difficult for us to know entirely what we were supposed to do for this one. There wasn't much educational value to dissecting the jellyfish because everything was already visible to begin with. Sea squirt was actually moderately difficult in comparison to our original thought of how it would be. We figured, since it was so small, that it'd be easy cause there wouldn't be much to dissect. However, the sea squirt had alot of vital internal organs to process such as the heart, gonads, and intestines, along with other things. The sea sponge was probably the easiest of all the dissections we've done. It was simple, all we did was cut down the center and cut again to view the insides of the sponge. We looked at the little cells that are displayed in the wall and we realized that if you leave the sponge without water the cells begin to collapse in. The squid was probably one of the more complicated dissections because of the fact it was so large and tough to cut. However, it was one of the most interesting as well. It was one of the first dissections we did, and we enjoyed it greatly. It was fascinating to discover how everything was connected and functioned together. The clam was at a medium difficulty because it was already hard enough to open it up. Then it was hard to find all the parts we needed since they were all squished together. It was hard to identify the -An invertebrate is an animal with no back bone/ spine.
-The common characteristics are: (1) They are multicellular. (2) No backbone. (3) No cell wall. (4) Most of them have tissues (not sponges) that are specific organizations of cells. (5)Most of them reproduce sexually (not asexually). - All of the organisms that we dissected are the Starfish, the small squid, Sea sponge, Sea squirt, Jellyfish, and the Clam. -The Starfish was a very interesting dissection because it's manly made up of sex glands and doesn't have that many important organs inside. One of the most interesting parts was when we got to see the inside for the center part of the starfish were the mouth was. - The Squid was one of the more complicated ones because of the many different parts of the squid. My favorite part of the squid was when we found the three hearts in the center of the mantel after we were done and we were just chopping away. -The Sea sponge was one of the easier dissections to do because of the sea sponge is one of the simplest organisms. There really wasn't much to say about the sea sponge besides the fact that it was very spongy. -The Sea squirt was also one of the easier dissections but also on of the hardest to do. It was hard to do because of how small it was. One little slip and you could have screwed up the whole dissection. -The Jellyfish was again one of the easier dissections but also one of the hardest because IT WAS CLEAR! CLEAR! MS. GREEN! CLEAR! Why would you make us dissect something that is already clear? I mean there was no point in dissecting something clear when YOU CAN ALL READY SEE IT! -The Clam was the very first dissection that we did and it took the longest because of this. There were many mistakes because we really had no idea what we were doing and the book wasn’t every clear on what to do ether. But in the end we learned a lot. |
AuthorsKim Cooke & Lauren Rittenhouse Archives
May 2013
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