Female Dolphins

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.

The Dolphins are off to a rough start as they begin the season 0-3. Trying to build a better reputation, the team has been working hard to improve their skills and hopefully come out with a few wins this year. So far nothing consequential has been seen from Dana as they are yet to find the element that will take their team to victory.

There are five teams that are worthy of being called the greatest team in NFL history: the 1972 Miami Dolphins, the 1978 Pittsburgh Steelers, the 1984 San Francisco 49’ers, the 2007 Patriots, however the 1985 Chicago Bears stand out amongst the crowd because of their outrageous defense, popularity amongst the NFL fans, and their roster that was filled with Hall of Fame talent. According to the 1985 Chicago Bears Statistics & Players (2017), the team finished with a season record of 15-1. News analyst Tony Andracki (2016) stated that, “The 1985 Bears turned in one of the most dominant seasons in American Sports” (p.1).

In marine mammal biology a large portion of the study is dedicated towards the study of adaptations to the marine environment. By comparing the anatomy between marine mammals and terrestrial mammals scientists can better understand evolutionary history of how these two categories of mammals diverged from one another. The purpose of this lab was to study the anatomy of different marine and terrestrial mammals and compare their similarities and differences in homologous traits and how adaptations were made specifically for marine mammals to survive the aquatic environment. To accomplish this bones of different species of animals were studied since these structures serve as the basis for comparison across species as well as an indicator of each animal’s individual morphology and physiology. A standard measurement protocol for bones of particular regions of the skeleton was established with emphasis on length versus width ratio as well as it’s overall size relative to its more complex features, i.e. humerus length versus hand length.

On August 24th was the Miami Dolphins football game versus the Atlanta Falcons. Although it was a preseason game it was still important because, the week before we got beat by the Dallas Cowboys 41-21,and we didn't want that to happen again. So in practice they worked harder and harder Intel it was game day. When they got off the buses they meant business, they looked ready to go. Everyone sat down at there sets 5...4...3...2...1 the boom the ball was kicked soaring as high as the birds.

Dolphins live in packs also known as pods. All dolphins don't live in the same pod forever they might move from pod to pod. That's why there are smart because they ned brain capacity to move from pod to pod and not break chemistry. Most pods don't care for the leader beside the bottlenose dolphins. regardless most species pods do not have any membership. a lot of pods are separated from male to female. Male pods can live with the same members ranging from 10 to 25 years. Male pods cooperate during mating season so each dolphin gets a specific female. Most male pods compete and team up to defend themselves. There are three different types of pods, nursery, juveniles, and males. Nursey pods are full of females and their calfs. Juvenile pods

Dolphins have been around a lot longer than humans. They originated about 50 million years ago. The most common dolphin, being the bottlenose dolphin, has been around for 15 million years. Surprisingly, dolphins originated from members of the cetaceans group. Cetaceans used to be land mammals but evolved into being aquatic mammals. In From Land to Water it stated, “The transition from land to water is documented by a series of intermediate fossils from India and Pakistan.” This research helps prove how they used to be land mammals but evolved to live in the ocean. Dolphins are one out of many aquatic mammals who need oxygen, but they need water in order to live. Believe it or not, dolphins are somewhat related to hippos, camels, deer, cattle, and giraffes. In From Land to Water, “ Many features that are

The female manatee has sole responsibility for the raising of the calf. In fact, researchers have not established the paternity of manatee calves yet, meaning that the father of a calf is not known. This is primarily due to the process in which manatees mate, called a mating herd. A mating herd consists of about 20-22 manatees, with one or two females in the herd. This process can last for several hours, and can be recognized by lots of splashing, rolling, and other “playful” behaviors performed by the manatees. Once this activity is finished, the female manatee goes through her gestation period, which lasts about 13 months! This is equivalent to the 9-month pregnancy period of a human. Then, once the calf is born, the female manatee will care

Orcas biological history entails high endurance for hunting expeditions, traveling hundreds of miles a day in the wild. Aisling Cronin, animal rights activist, pointed out in Killer Whales Don’t Belong in Captivity that, “In the wild, orcas can swim up to 100 miles per day – a phenomenal amount, in comparison to the exercise they receive in captivity” (Cronin, 1). Orcas travel with the sole purpose of hunting. In nature, they hunt on fish and seals. Again, due to lack of exercise, Orcas body structures adapt to conserve energy by decreasing the mass of some muscles.

With a small triangular hump instead of a dorsal fin, a brown color and tendency to swim on their side, the Ganges dolphin is different from other common species of

Transition: After learning about a dolphin’s sense of communication, we can now build upon this information by examining their unique behavior.

The Sperm whale is one the largest predators that inhabits the northern, southern hemisphere, and all parts of oceans. The animal can often be found swimming throughout the waters of the Galapagos Islands. It holds the title of being the largest toothed whale, growing an approximate 40-60 feet in length. The animal is also identified by its unique brown and blue-gray skin color. The Sperm whale’s squared shaped head is the most and largest identifiable feature, while containing underwhelming eyes. The name “sperm” whale derives from an organ inside the mammals large head called the spermaceti organ. The Sperm whales uses its unique features to communicate through echolocation by maneuver its way through the ocean to find prey and potential

Several lineages of terrestrial mammals evolved separately to live in marine environments. Although there are several different lineages of marine mammals; many did not originate their marine adaptations from a common ancestor. Different marine mammals do share similarities in morphology and show convergent evolution. The environment has shaped these species in similar ways. Through research, it is known that all mammals, marine or otherwise, share a common ancestor far back in their phylogenetic tree, but some are more closely related than others. These phylogenetic origins of marine mammals can be looked at to compare and contrast the similarities that they share because of a common ancestor and those similarities they share because of convergent

There is something about dolphins that fascinates me. They are some of the most intelligent and beautiful animals that I have ever seen. Their faces are so cute that every time I look at a dolphin it looks like it is smiling at me and wants to tell me something. The noises they make represent some kind of language and it makes me wonder if they can really communicate. I also want to know what kind of feeling they have and whether they have emotions. This is why I chose to do this I-search project on dolphins; the different kinds of dolphins there are, the places that they can be found and their mental abilities.