Persuasive Essay On Dinosaurs

In 1993, Steven Spielburg’s Jurassic Park introduced the concept of bringing extinct species back. In 2003, a team of Spanish and French scientists took Spielburg’s movie to the next level—they successfully brought back the Pyrenean ibex, a species of wild goat (93). With increasing rates of extinction, the scientific community is debating whether or not this process of de-extinction should continue to be pursued. Although it would be remarkable to visit an exhibit featuring a saber-tooth tiger or woolly mammoth, these animals went extinct for a reason; humans should not bring back extinct animals, but instead use the funding for more practical purposes.

The leatherback sea turtle, Dermochelys coriacea, belong in the phylum of Chordate, class of reptilian, order of Testudines, and the family of Dermochelyidae. These reptiles can be found throughout the Pacific, Atlantic, and Indian Oceans. Leatherback sea turtles are the largest turtles in the world. The average life expectancy of a leatherback turtle is forty-five years. Average size of the turtles upper shell, carapace, is about five feet and has a rubber-like texture feel to it consisting mainly of oil-saturated connective tissue. On average Dermochelys coriacea can weigh any where from approximately six hundred to two thousand pounds. In length these turtles are typically fifty-five to seventy-nine inches. The lack of claws is another distinguishing

The green sea turtle occurs throughout tropical and subtropical oceans and is among the largest of the hard-shelled sea turtles growing to as much as 440 pounds and four feet in length. The breeding populations in Florida were listed as endangered in 1978 (43 FR 32800 32811, July 28, 1978) whereas all other populations were listed as threatened (NOAA 2015h). There is a proposal for identification of a North Atlantic green sea turtle distinct population that would be listed as threatened, continuing its current listing status near New York (80 FR 51763 51764, August 26, 2015). They are found in the shallow waters (except during migration) of shoals, bays, lagoons reefs, and inlets, often where submerged aquatic vegetation exists, from Maine south to Florida, and throughout the Gulf of Mexico and the Caribbean Sea (USFWS 2015n, 2015o; NOAA 2015e). Green sea turtles nests are not present in New York; however, they occasionally are found stranded on or near the shore (NYSDEC 2015ad). Breeding takes places in subtropical to tropical oceans every two, three, or four years between June and September, with peak nesting in June and July (NOAA 2015h; USFWS 2015u). Hatching usually occurs at night, and many green sea turtle hatchlings seek refuge and food in masses of floating sea plants (USFWS

Loggerhead eggs and hatchlings are a large food source for a variety of terrestrial animals, nearshore predatory fish, and seabirds, providing substantial amounts of energy and nutrients for these species (Wilson et al. 2010). A five or ten year period of loggerhead turtle declines may cause sublethal effects such as decreased growth rates or reproductive output for these predator species and a fifty year period of loggerhead turtle decline may potentially have more severe impacts such as significant declines for local populations that rely on eggs and hatchlings as a food source.

Unfortunately, the total population of the Cagle’s Map Turtle decreased by ⅔ since 1974 in 1997 and is only continuing to decrease due to major disturbances in habitat, including water diversions, degradation, and being subjected to living only along the Guadalupe River Basin(Ernst, C.H., et al., 1997). Since the Cagle’s Map Turtle only survive in freshwater environments, their population decreases in increased levels of salinity caused by the water

The Ocean is 70 percent of the earth’s surface, humans have explored less than five percent of the ocean, and is home to an innumerable amount of living organisms. One of its oldest inhabitants is the Cheloniidae dates back to the Triassic era, roughly 250 million years ago, (Wang et al., 2013). The Cheloniidae family has several subspecies the Eretmochelys imbricate, Caretta caretta, Dermochelys coriacea, Lepidochelys olivacea, and Chelonia mydas. While there are multiple endangered subspecies of the Cheloniidae; the endangered Chelonia mydas, commonly known as the green turtle, will be the focus of this paper. The paper will discuss the green turtle’s importance to its ecosystem, where they are most commonly found, importance to its ecosystem,

Since they are capable of living for lengthy amounts of time, their diet is very simple because of the availability of their food. All green sea turtles that reach adult hood are herbivores that primarily consume sea grasses and algae. Juvenile green sea turtles, on the other hand, are carnivores primarily consuming on both plants and animals such as crustaceans, sea grasses, and tubeworms ("Green Sea Turtle - National Wildlife Federation" par. 9). Through research, it is said that green sea turtles are able to consume about 275 different species of seaweed. To help them cope with this diet, they have micro flora living in their large intestine to breakdown the cellulose that is indigestible (NOAA Fisheries par. 6). Green sea turtles reach their sexual maturity between 25-35 years old. However, the length of reproductively can vary ranging from about 17-23 years. As soon as they become fertile, they return to the nesting beaches of the Northwestern Hawaiian Islands to lay their eggs from every two to three years. They will deposit three to six clutches per nesting season with about twelve days in between (NOAA Fisheries par. 10). Each clutch can contain about 100 eggs that will take 60 days to incubate. Once they hatch and reach the water, they rarely return to land. They instead feed on the seaweed and crustaceans that are off shore. Green sea turtles inhabit the shallow waters until it is time for breeding season. They are very particular in finding a nesting spot that they will often travel many oceans to reach their ideal nesting

Sea turtles face a lot of life or death obstacles from the second they are born. Even

I have recently made an amazing scientific discovery. I found a fully intact dinosaur frozen in ice. It was awesome! It was a Tyranosaurus Rex of all dinosaurs. Then when I showed it to the committee, they gave me a team of scientists so we could start studying it. So I immediately started researching it. About two days later, I was sitting in my office and a brilliant idea came to me. If I could find a way to revive it, I could make a amusement park about it and make a fortune. With the committees permission, of course.

After the females emerge from the ocean, some will crawl out yet reasons such as naturally or caused by artificial lighting or the presence of people on the beach - decide not to nest, this is called a "false crawl" Females on the nesting beach after recent mating can be observed with scratched shells and sometimes bleeding from where the males were hooked to their shells. Sea turtles mating have been reported to be very aggressive during mating sometimes males wil compete for females and may even fight each other. Females may even mate with several males prior to nesting season and store the sperm for several months. When she lays her eggs, they will have been fertilized by a variety of males. This helps keep genetic diversity high in the

Nesting habitat degradation is an anthropogenic threat to the loggerhead sea turtles. These threats include coastal development, erosion control barriers or beach armoring, artificial lighting, pollution, removal of native vegetation, and vehicle and pedestrian traffic (NMFS and USFWS 2007). Some solutions include protecting and managing turtles on nesting beaches, monitor coastal construction, implement lighting regulations, screen artificial lighting with vegetation, and impose regulations on beach armoring (NMFS and USFWS 1998). Predation is an important threat to consider in nesting areas for the loggerhead. Many places have depredation to protect the eggs and hatchlings against predators such as feral dogs, raccoons, and foxes (NMFS and USFWS 2007).

The mating season is between the months of March to October and the green turtles usually lay about 100-115 eggs which can take up to anywhere between 6 to 10 weeks for the eggs to hatch. To determine the sex of the turtles, the temperatures of the sand will be different for each sex. For example, if it is below 85 degrees it is usually male and if its above 85 degrees then it is usually female. When the young hatch out of their eggs, they typically make their way to the ocean where only few survive to

There are so many interesting things about them. Dolphins have been around for about 15 million years now. They’re extremely intelligent, probably even more intelligent than us humans. Dolphins are becoming endangered because of humans and many don't know that. They are known as the oceans most kind animals.Dolphins have originated millions of years ago,are extremely endangered,and are becoming endangered.The most important thing to know about dolphins would probably be how they originated because without that those cute aquatic mammals wouldn't even exist.

Sea turtles have been a big help in maintaining the health of the world's ocean for more than 100 million years. They help by keeping up coral reefs all the way to transporting nutrients to beaches. Major changes have occurred in oceans everywhere due to the decline of the sea turtle population. Oceans are unhealthy because of this. It is time for us to protect the sea turtles and rebuild their population to ensure healthy oceans in the future. According to oceana.org, there are seven species of sea turtles that roam the world, six of which inhabit U.S. waters, and have been listed as either endangered, or threatened. Up until now, all six of these species are not at a healthy level despite protection measures from the Endangered Species Act (ESA). Some populations even continue to decline. Even at a diminished population, sea turtles play an important role in ecosystems. They are also extremely important to humans because they keep oceans healthy, and we use the ocean as a food source. They keep up the health of the ocean in many different ways, all of which, are very important.

With nearly millions of animals dying each year from being captive, or endangered species being hunted down and killed, we need to discover a new way of displaying that our world is full of beautiful animals and wildlife. Wild animals are suffering both physically and mentally from the lack of freedom that confinement imposes. These harmful environments are preventing animals from having the opportunity to live in, and be exposed to their natural habitats. Keeping animals imprisoned in cages and small enclosures just for the sake of human observation causes stress and frustration, which is risking animals overall health and well being. These morally unacceptable and cruel actions of retaining wild animals in captivity is certainly wrong.