Comparison Of Sperm Whales And The Killer Whale

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.

For several years, Americans have been visiting amusement parks, like SeaWorld and Six Flags, to observe large animals like orcas, also known as killer whales. These whales are quite difficult to view in the wild, but can now be seen for a simple fee. Orcas are known to be one of the smartest mammals. They are friendly, and this has caused people to take advantage of them. For the past sixty years, people have brought these massive creatures into their aquariums to make a profit from their exhibitions. Often, without considering the orcas' quality of life. While kept in captivity, killer whales are forced to do many tricks they normally wouldn’t do in the wild. Over the years, there have been numerous controversies regarding killer whales

Killer whales are one of the most fascinating displays of ocean life. The killer whale has characteristics that are important to its survival in the ocean. It is interesting to know that killer whales have a plentiful diet. It is astounding to see how killer whales behave in the ocean. I plan to tell you about the killer whale, its characteristics, its diet, and its behavior in the ocean as well as the predation of the orca.

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

“… building a tank the size of Rhode Island wouldn’t be large enough for a six-ton male killer whale such as Tilikum, an animal capable of swimming 100 miles a day,” states an anonymous whale expert. Whales have been in captivity since 1861 when P.T. Barnum displayed the first live whale that was captured in Canada. However, Barnum had no idea how to care for the mammal and it died after only a week in captivity. (Animal Legal and Historical Center, 2014) Being up close with killer whales could give us some clues about how they interact with each other, including physical behavior, their dialect, and how their pods work together as a family unit. However, what we are finding is that whales who belong in the wild are suffering in

Everyone loves going to marine parks such as SeaWorld and Marineland. They offer many spectacular shows with dolphins, sea lions and birds. However, the main attractions they offer are orcas, or as they are better known as killer whales. Highly intelligent and with acute senses of sight and hearing, they are apex predators. Recently, the possession of orcas has been a big topic of controversy. Many people believe that the animals are being mistreated in captivity. Their captivity limits their freedom and enjoyment. Many orcas suffer from poor physical and mental effects in captivity. Killer whales will usually travel between 50 and 100 miles per day in the wild, but in captivity all they can do is swim in circles or float for no reason. In the wild, killer whales live in pods of

I will never forget watching the winning touchdown pass from the stands, that won the Dolphins their first and only game in 2007, I was screaming as excitement stemmed through me that day. The 2007 season was one of the worst for the Miami Dolphins; however, in 1972 the Dolphins made history with a perfect season and a perfect finish. I’m going to compare both teams coaches, key players, Superbowl wins, and win loss record. Although with different circumstances between the 1972 Dolphins and present teams, they deserve more recognition and regard from football fans across the country.

For years the killer whale, also known as Orcinus orca, has been drawing the attention of the public through the entertainment industry. These marine mammals have been bringing in billions of dollars to amusement parks such as Sea World, but at what cost? An idea that these killer whales can live happily and content while in captivity may be going through the minds of the public, but this cannot be further away from the truth. To have such complex creatures in captivity is not morally correct and there are many points against it, such as their level of emotional competence, violence between the killer whales, violence of killer of whales towards trainers, shorter lifespans, physical harm, and their level of intelligence. After taking a look at how these creatures function and the conditions they are put in while in captivity, there is no question about whether or not these mammals should be kept in captivity; an experience such as this affects these marine mammals just about the same as it would affect a human because of their high highly developed emotions and complexity. Since these industries do not have a natural authority over these creatures no matter the cause, the best thing they could do for these killer whales is to stop capturing them and return those who are capable back to the wild.

Killer Whales are Large and intelligent animals that are kept in captivity. SeaWorld in San Diego has 23 killer whales in captivity. Marine biologist including SeaWorld critics agree that the whales probably will never be released to the open seas. How would you feel if you were separated from your family and never see them again? This is how the whales that are kept in captivity feel. Although some people think whales should be kept in captivity I disagree because this makes the whales unhealthy since they are living in a pool instead of the ocean.

The second captive killer whale was in 1964. This eventually ended up as the first whale to be kept in captivity for a period of time. Today there are 52 killer whales in captivity that have great health and are with Sea World. Killer whales should stay in captivity because zoologists are finding better ways to help killer whale survival such as research and watching the things the orcas do. They are better taken care of and give zoologist and themselves the scientific benefits they need because scientists earn more information and the whales are provided with better health

The research shows that killer whales are not healthy in captivity. But we can stop this and seaworld has taken some steps to help solve the problem that orcas aren’t healthy in captivity. This problem affects the orcas big time, and the trainers that take care of them. Killer whales in the wild are having a great time, but remember in some countries there are no laws stopping them from catching or killing orcas. Maybe we should call them killer humans, instead of calling orcas killer whales because they’re really the problem. Research highly suggest that they expand their tanks or just plain out stop pulling killer whales out of the ocean. Some laws have been passed in the US to stop people from killing orcas or pulling them out of the ocean.

At least 164 Orcas, Killer whales, have died in captivity all of them being premature deaths. Orcas should not have to suffer in captivity and should be left alone and stay in the wild. All Orcas in captivity will die at half there age. They must live in tiny tanks equaling to us living in a bathtub. They are captured from the wild when they are young and are taken from their family and then forced to interact with other whales from different whale pods which also speak a different language then them.

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.

Killer whales are apex predators, lacking natural predators of their own, and inhabit all of the worlds oceans and most of our seas. They vary broadly in behavior, diet, and communication patterns. There are three main sympatric ecotypes of killer whales present in the Pacific Northwest, known as “resident”, “transient” and “offshore” killer whales. Of these, the resident whales of the Salish sea have been by far the most heavily studied. Their prey is salmon, chinook salmon in particular, and they hunt cooperatively. The resident pods are divided into “northern residents” and “southern residents”, the latter being comprized of three pods (J, K, and L). These three pods are well researched, as their markings and distinct calls make identification extraordinarily accessible to human scientists. Orca are distinct among mammals for the long post-reprodutive life of female orca, who provides extensive parental care even after menopause. Numerous studies have shown a clear correlation between the mother’s survival and the offsprings fitness. This paper will explore the matrilinal social structures of Puget Sound’s orcas to assess the evolutionary advantages to close mother-son relations. In particular, it will examine the difference in behavior of female and male offspring upon reaching sexual maturity, and relate this to similarities or differences in parental care output from male and