Shark Observation Report

2. THERE ARE NO CONSISTENT TRENDS IN EVOLUTION: In the evolution of sharks, we clearly see that there are no consistent trends in their evolution from the beginning of their existence, they are a species that are always changing or evolving as mentioned in the previous example. This is why we see the diverse amount of species of the shark family all over through the ages both prehistoric and present. And can clearly see the branching out of the species from is simplest form to various other forms, the branching of the shark family can be seen

Alligators habits Normally, when you stroll in the zoo and you encounter alligators, you can see that they either stay still on the ground, under the heat of the sun or on water and they do this for a long time. Do you ever wonder why? This is because they don’t have a mechanism to control the hotness or coldness of their body. So if they feel the former they dip on the water, if the latter they sunbathe on the ground. Alligators are social animals Alligators like to stay together.

I have always been an animal lover ever since I could remember, especially exotic and out of the ordinary reptiles. Having a pet ball python is the easiest animal to take care of. You may start to think that I am going crazy or something similar to that case but to my defense, I have experienced caring for them for a few years already and know how great of a pet they are. The reactions I get when I take it out in public varies from person to person. When it comes to the food intake or supplies needed to provide its basic care, it is very minimal.

The main species being killed are the Bottlenose Dolphins, Spotted Dolphins, Risso’s Dolphins, False Killer Whales, and Short-Finned Pilot Whales. All of those species listed are considered threatened by IUCN-World Conservation Union. If these species were to become extinct or endangered there would be an overpopulation of fish in the oceans (Conservationists). In many ways, the Japanese businesses doing these drive hunts are causing many different problems the environment that will eventually come back to haunt the

Sea otters are omnivores as they do eat kelp and other sea-going plants. Regardless of this however, most sea otter people have an essentially flesh eating diet with sea otters known to eat more than 40 unique types of marine creatures. The sea otter chiefly chases ocean urchins, mollusks, crabs, snails and little fish in the water. The sea otter is one of only a handful couple of creatures on the planet that has the striking characteristic of utilizing devices, for example, rocks, keeping in mind the end goal to get at it 's prey. Sea otters have couple of normal predators in the ocean because of their vast size.

Sharks prefer to live in warm waters near the coast. A baby shark, which is called a pup, usually lives alone close to land so that they may have places to

But all you had to do was take a few quick strokes to the side to reach the edge. That’s how you got out.” (98). I on the other hand, have never seen a never-ending pool let alone use one. Also, whilst sitting in the ocean he was bitten twice, one time was caused by a blue shark and the other was due to a much larger shark called a tiger shark “Davey has been bitten by a shark. It shouldn’t have been this surprising; he’d been surrounded by the things” (186).

Mike explains how it was unlike he has ever seen before and that was the moment he became hooked. Later in his life he became an American documentary filmmaker specialising in underwater cinematography. Mike DeGruy was a regular on Shark Week and even a shark attack survivor. He is well known for his shark attack in april of 1978 where he got severely bitten by a grey reef shark. He was a member of many deep sea expeditions and was a part of the team that first filmed the vampire squid and the nautilus.

Tourism is a huge industry in today’s economy, however due to this it can have long lasting effects on the animals it involves. Whale sharks (Rhincodon typus) are the biggest animals in our oceans and have a docile personality which attracts tourists every year, however in recent studies it has shown that viewings of the whale shark can cause it stress resulting in behavioural changes. The stress caused on the whale shark can have different effects on the whale shark which can interrupt their feeding, breeding and their lives in general. These are proven in studies that I have looked at, including a paper, by Angela Quiros, that studied the whale shark behaviour whilst being observed by tourists in boats and in the water. It also looked at if the tourists and

Most food which reaches the deep sea is composed of ditritus; the decaying remains of plants , algae, microbes and other organisms. This ditritus is eaten by scavengers such as sea cucumbers. Occassionally a carcas of a large animal such as a whale might sink down to the deep sea and is eaten by species such as hagfish. however not frequently enough to sustain life. (Yancy, 2011) No sunlight can penetrate through the 1000 metres of water, rendering photosynthesis impossible, and so there is no plant life.

This shows that sharks are necessary for every eco-system and their destruction affects us in more ways then we can imagine. Sharks are very at-risk for over-fishing because they take a long time to reach the stage where they can reproduce and in general only have a few pups when they give birth. Most sharks only have one or two pups every time they give birth. These factors make the time-period

Although the worms extract the nutrients from the whale bones, scientists did not know how, due to their lack of “body parts for physically drilling into the hard material” and absence of a mouth and gut (Ennis). Instead, it turns out, the worms have special root-like structures that attaches to the bones and dispenses an acid that dissolves the whale bones and extracts the nutrients. Although, the zombie worm is not the only interesting deep sea creacher. The deep sea jellyfish for example, are just as fascinating as the zombie worms. They live about 820 meters below the surface of the ocean (Jonssen).

How is this process allowed or encouraged at SeaWorld when they are kept in a concrete pool? Each animal enclosure needs to be updated to meet the specific necessities of each animal. One risk posed by the current habitat for killer whales, is how long these animals spend at the surface in captivity. The whales can become sun burned and two killer whales have died from being bitten by a mosquito (Lewis, 2013). This is unheard of in the wild because the killer whales are able to swim away from pests such as mosquitos.

subsection{Recommending Unexpected Relevant Items} Once the forgotten items have been identified, we need to distinguish relevant ones from the rest. Given user taste shifts, as well as the changes in the system as a whole, not all unexpected items remain relevant, and consequently useful for recommendation. The key concept to identify relevant items is the extbf{relevance score} of the items at each moment. We propose four strategies to define the relevance score of each unexpected item. The goal is to recommend for each user only the Top $N$ items with highest scores.looseness=-1 subsubsection{Temporal-Distance Heuristic - TDH-2 } A simple strategy is based on recommending items that have been unexpected for long intervals.

This pattern of embryo development does not only apply to humans. Looking at the development of a shark, and we see structure development that mimics a human’s. Furthermore, if we take a look at the nervous system of the shark, and we see the same cranial blueprint we have. It’s amazing to see how similar we are to the predators of the sea; however, our ancestors do not stop here. In WORMS, we also find a little bit of ourselves, particularly the worm, Amphioxus.