Humpback Whales: Article Analysis

I believe that underwater noise has an effect on marine animals such as whales. Using information from the passages I will prove my point. Their numbers are declining rapidly and I believe that underwater noise has some involvement in the rapid decrease in their population numbers. The information given within the two passages will help prove my point.

The ancestors of the whales transitioned from being land bearing animals to becoming animals that live in the ocean. While the original ancestor of whales lived on land as it evolved it was able to start to enter the water until it struggled more to get on land than to get in water until the whale’s ancestors began to live exclusively underwater.

The evolutionary path of a whale is a fascinating process of a terrestrial mammal that evolves into a marine mammal. This evolutionary path started with one of the earliest ancestors called “Pakicetus”. A Pakicetus was discovered to be a land animal with four legs that had teeth as carnivores. It skull structure was long, but this organism didn’t look like any marine animal. The scientist then discovered that on the skull’s ear region it was surrounded by a bony wall. This feature on an organism only was distinct from one type of species, scientist discovered that this animal “Pakicetus” was an ancestor of a whale. By comparing the early whales Pakicetus to the next generation of ancestors Ambulocetus, the Ambulocetus whale looks more like

The origin of modern day whales, a mystery that has puzzled paleontologists for years, may have just been solved with the discovery of an ankle bone. This discovery might sound simple and unimportant, but the bones of these ancient animals hold many unanswered questions and provide solid proof of origin and behavior. The relationship between whales and other animals has proven to be difficult because whales are warm-blooded, like humans, yet they live in the sea. The fact that they are warm-blooded suggests that they are related to some type of land animal. However, the questions of exactly which animal, and how whales evolved from land to water, have remained unanswered until now.

There is no doubt that humans have always been intrigued with the majestic beauty of the large giants found in all of the world’s oceans. Whales and people have had a long history together, marked by many turns of events.

Blackfish is a shocking film that reveals a lot of information regarding Sea Worlds famous known “Killer Whales”. These enormous whales are highly trained by trainers of Sea World who perform for thousands daily. The film uses the tragic tale of Tillikum to support their many claims and an investigation of the Sea World

Recent evidence suggests that whales may not have always inhabited the oceans. Bones of an ancient ancestor of modern day whales, the Basilosaurus, were discovered in Pakistan that suggest whales evolved from a wolf-like creature. This genus of an early whale lived 34-40 million years ago in the late Eocene. These fossils show many different features in common with both modern day whales and modern day land mammals. Since the discovery of these bones, many other evidences show that whales are a likely descendant of the Basilosaurus through many different ways, such as embryologic comparison and DNA testing. Whales aren’t the only suspected descendants

By examining, they are too big, they don't get the right care/the whales hurt each other,

• Briefly describe the current theories regarding marine animals using the Earth’s magnetic field for navigation and list at least one animal that theoretically uses this method. Do you feel the theories regarding marine animals’ use of the Earth’s magnetic field for navigation are accurate? Why do you feel this way? How could this ability benefit humans?

In “Joyas Voladoras”, Brian Doyle indicates that the heart is the emotional center of life that controls feeling that cannot be hidden Hiding the emotions created by the heart can set up a dull future. Doyle uses the humming bird’s need for sweets to portray the idea of the necessary emotions of life. When talking about the humming bird’s risks, Doyle writes,”If they do not soon find that which is sweet, their hearts grow cold, and they cease to be.” The heart needs love and emotions in order to function properly.

The ocean is a vast biome that is constantly changing. There is much to learn about the life within, the article “Omura's whales (Balaenoptera omurai) off northwest Madagascar: ecology, Behavior and conservation needs” showed how our knowledge of the ocean and the life within continues to grow. Balaenoptera omurai, or Omura's whale was only found as a new species in the year 2003. Their are no dependable population size estimates or evaluation of conservation facts because there is not enough data collected on these cetaceans. Scientists are able apply what they learn from some of these organism to humans. In the article “Reproductive Conflict and the Evolution of Menopause in Killer Whales” scientists were able to draw comparisons between Humans and other species.

Whales resort to pacing around the tank in circles to emulate the fast strong feeling of a swim normally done in the wild in an attempt to keep their dorsal fin upright.

Juvenile Pacific Salmon and other migratory marine animals are travel many long distance under water to use resources in different oceanic regions. The main question is how these marine animals travel many long distance and able to locate Specific Ocean feeding areas without previous experience. Researchers experimentally demonstrate that the juvenile chinook salmon respond to magnetic field which lead them toward their marine feeding grounds. The “magnetic map” of Juvenile salmon to be inherited. These results, Similar with findings in the sea turtles indicate that the magnetic maps are genetically wide spread and show their navigational abilities evident in many long distance under water

Ned too shows remarkable moral composure, above that of Nemo. When Nemo decides to callously ram cachalot’s (sperm whales) in the path of the Nautilus, “‘Well, sir,’ replied the Canadian, whose enthusiasm had somewhat calmed; ‘it is a terrible spectacle, certainly. But I am not a butcher. I am a hunter, and I call this a butchery’” (chapter 12).

Whales move a far distance, and the gray whales are the farthest mover. Some whales move between onshore and offshore areas, and the others migrate Iatitudinally (north-south). For instance, the Brazil and New Caledonia whales migrate from low-latitude grounds to high-latitude grounds. In general, whales migrate to cold grounds in summer to feed and move to hot grounds in winter to breed. Whales move straightly. There isn't any evidence which can prove they navigate by the magnetic field