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The Sea Turtle
Transcript of The Sea Turtle
-Jeffrey Moussaieff Masson & Susan McCarthy, When Elephants Weep.
I think that this quote is speaking of how we, humans, are ruining our planet, not just for our own kind, but for the many other species in the world as well. To me, this quote is saying that we’re not the only species on this planet; all the species in this world are connected, when one becomes extinct, everyone and everything is affected, in one way or another. This quote tells us that we, humans, are endangering the species on this planet. We, humans, are the ones destroying habitats, hurting and killing off species, and in the end, it’s us, the humans that are affected by our own actions. By Brittney Jewan
9-31 THE SEA TURTLE Introduction Picture retrieved from: http://www.lbknews.com/2012/09/01/mote-marine-allows-closer-look-at-sea-turtles/ Picture retrieved from: http://www.australiangeographic.com.au/society/help-save-our-sea-turtles.htm http://www.crreferrals.com/blog/2011/07/adopt-a-sea-turtle-new-program-in-costa-rica/ By Brittney Jewan 9-31
I chose the sea turtle because I find it very unique. I travelled to Maui when I was in Grade 5, and while I was there, I found a great interest in snorkelling. Every time my family and I went to a beach, I was out snorkelling, determined to see a turtle! So, on Christmas day, bright and early, I set out snorkelling. After swimming for a while I discovered what I had been looking for. Not far ahead of me were not just one, but two sea turtles! One was larger, most likely the mother, and there was also a small turtle, swimming close by. The bigger turtle swam right by me, and even though I was told not to, I reached out and brushed my fingers along its shell. That experience made me love sea turtles. Not one turtle is alike. Everyone looks similar, but if you look closely, the shells are all different in design and colour. I have interest in Sea Turtles for many reasons. I find it really interesting that they can live to be so old. They can live to be around 80-85 years old! They can also migrate as far as 1400 miles between the places where they are born and where they nest to the places where they feed. Sea Turtles are hardworking, incredible animals. Variations Within The Species of the Green Sea Turtle Male and Female Green Sea Turtles are roughly the same size. Green Sea Turtles are about 78-112cm in length, and can also be 150-410lbs in weight! The Green Sea Turtle is named after its green colored body fat! The Green Sea Turtle's shell is a roundish, heart-shaped shell with pieces on them called scutes. The male and female generally look the same until they mature, it is then that they can be differentiated. Adult males have longer, thicker tails then adult female turtles. No two shells have the same design/markings. Generally, the look of the Green Sea Turtle looks the same. The older aged turtles are much larger and sometimes have lighter colored markings on their shell, as if they are fading. That's the differences within the species! The Green Sea Turtles Behavioral Adaptations The Green Sea Turtle has many behavioral adaptations that enable it as a species to strive. Although yes, some adaptations have been found, many of their adaptations are hard to record as they are underwater for 99% of their lives. Some examples of behavioral adaptations for the Green Sea turtle are:
The Sea Turtles return to the same grounds they were born at to mate and nest their eggs at.
The female turtles dig a nest in the ground with their back flippers, bury their eggs in the hole in the ground, and go back to the ocean right after.
After the young hatch from their eggs, they may take as long as a week to dig themselves out of the nest.
When the baby turtles are ready to move into the ocean, they emerge from their nests as quickly as they can during the night.
I think that the Green Sea Turtle uses these adaptions to help it survive very well. For example, the Sea Turtle's young are commonly eaten by sea birds, so, if they make their way to the ocean during the night, when hopefully no sea birds are around, then more of them will be able to live. This is probably also the same reason that the female or mother turtles dig holes in the sand and bury their eggs, so the birds and other predators cannot eat the baby turtles before they make it to the ocean. These adaptations that the Green Sea Turtles have enable them to be more successful. This way, less of the turtles die! Symbiotic Relationships A Symbiotic Relationship is a close and sometimes lengthy relationship involving two or more different, living, biological organisms. A mutualistic relationship is a relationship between two individual organisms of different species that both benefit from having the relationship. A Parasitic Relationship is a relationship between two or more individual organisms of different species that one individual organism benefits from the relationship while the other organism is harmed from the relationship. A Commensalistic relationship is a relationship between two individual organisms of different species that one individual is benefited from the relationship while the other individual is neither benefited or harmed. An example of a parasitic relationship is a tick and a human. This is considered a parasitic relationship because the tick benefits, and the human is harmed. The tick is benefiting because it is gaining strength from the nutrients it gathers from the humans' blood. The human is harmed in this relationship because the tick is taking away the humans nutrients, and leaving it with small, itchy, red bites on the surface of the humans skin. That is why the symbiotic relationship between the tick and the human is parasitic. Extirpation:
The extinction of a species from specific geographic areas Endangered:
Of a species, facing risk of extinction. Threatened:
Threatened species are species that could potentially be endangered, the species' numbers are declining enough to potentially be dangerous. Special Concern:
Any species to have a small population level, but not so small that the numbers of the species are incredibly dangerously low. It is possible that the species could be extirpated from an area at special concern level. My animal, the Green Sea Turtle, is at the 'endangered' level of endangerment, which means it is at a fairly high risk of extinction, but there are still a quite a few left. There are many Conservation Strategies in place to help save the Green Sea Turtles. For example, Environmentalists are working very hard to prevent oil, plastic, and other pollutants form reaching the water, and killing the turtles. Another example of a Conservation Strategy is when the Turtles go to shore to lay their eggs, humans involved in projects to save the turtles watch the eggs, and when they are ready to hatch the humans help them make their way to the ocean, without any birds catching the turtles and eating them. This way, more turtles make it to the ocean, and more turtles survive. Ways Humans Have Impacted The Turtles' Habitat:
Everyday, humans are doing more and more things to ruin the habitats and environment of our animals. The Humans have ruined forests, polluted our oceans and air, and littered our grounds. The Green Sea Turtles have been affected greatly by humans and their carelessness. For example, everyday and all the time, humans are dumping oil, gas, and other pollutants into the oceans, the turtles natural habitat. The turtles are killed by the intake of the oils, and so are the species that they eat. The oil also ruins the water, polluting it and making it dangerous for the turtles to live in. Another way that the Green Sea Turtles are affected by the humans is that humans think its okay to feed the turtles if they are on a boating trip or snorkeling. This affects the turtles because the turtles get used to being fed, and then cannot find food on their own. The turtles then starve to death because they cannot fend for themselves. The Ripple Effect:
Humans pollute the oceans everyday. They dump oils, gases, and plastics into the oceans. This kills and injures the Green Sea Turtles. Humans also ruin the turtles nests, sometimes killing the turtles that are still in the eggs, that have yet to hatch. Humans also take the turtle eggs from the nest and use them as food, which is illegal, but humans still do it anyways. If humans keep hurting the population of the turtles, in about 60 years, the whole species of the Green Sea Turtles could be facing extreme risk of extinction. Every year, more and more turtles die, and the population numbers decrease. STRUCTURAL ADAPTATIONS The Green Sea Turtle's arms are in the shape of a paddle, which makes them streamlined for swimming! The shape of their arms help them glide through the water easier, enabling them to swim better! This helps the turtles "compete for resources" because they can swim quicker and more efficiently, meaning they can get to their food sources quicker. It helps the turtles survive.
Another structural adaptation of the Green Sea Turtle is that their limbs do not retract into the turtle's shell. The reason for this adaptation is that the turtles can swim much faster without the spaces in between their shell and their limbs. This helps the turtles "compete for resources" because again, their swimming ability is increased, making them strong, fast swimmers, helping them reach food fast.
One more structural adaptation of the Green Sea Turtle is that they can stay submerged in water for about 5 hours. When they are underwater for that amount of time, their heart rate slows down to save oxygen in their lungs. This adaptation helps the turtle because it allows them to stay underwater longer, because their heart rate slows (oxygen is conserved), so they have a better chance of finding resources that they need to survive. Picture retrieved from: http://wildhawaii.org/marinelife/turtles.html Picture retrieved from:
http://www.vanaqua.org/experience/activities/animal-encounters/sea-turtle-encounters Picture retrieved from: http://www.vanaqua.org/experience/activities/animal-encounters/sea-turtle-encounters Niche:
Desert Cactus- The cactus has one of the least competitive niches, because of where it is in the wild and what it needs to survive. The cactus doesn't have very much competition with other plants. This is because the cactus is the only plant that can sustain life in the hot deserts with very little water, and extreme temperatures. Therefore, the cactus has a very narrow niche. This is because they cannot sustain life in cold climates, or even in forests. The desert cactus is made strictly for the desert. The cacti consumes and stores any water it can. The cacti is eaten by Javalina, humans, some types of deer, birds, rabbits (sometimes), and insects! The desert cacti are only found in dry, hot, sandy places such as the Sahara Desert, or places like Las Vegas, Nevada.
Bryum Argenteum- This is a type of moss found only in the antarctic. This special moss can survive in very harsh, cold weather. This moss produces more energy by photosynthesis in lower light levels. This moss is eaten by rabbits that live in the Antarctic. This special type of moss has a very narrow niche, as it can only live in cold climates. It grows on sandy, or dirt surfaces. The Bryum Argenteum has a very narrow niche.
Rabbits- Rabbits are animals that can live in a variety of areas. They can survive in grasslands, forests, rural or suburban areas, or cold climate areas. As long as there are plants for the rabbit to feed on, they can sustain life in virtually any area. Rabbits are eaten by many carnivorous animals such as cougars, wolves, lynxes, foxes etc. Rabbits feed off of plants. This is why Rabbits have a very broad niche.
Mosquitoes- Mosquitoes are insects that love areas with lots of water and moisture in the ground, or in the air. Mosquitoes are found all over the world. Mosquitoes are eaten by other insects such as bees, dragonflies, birds, bats, guppies, etc. Mosquitoes feed off of the blood of the human, and pollen. Mosquitoes are the second largest pollinators, which is their role in the wild. Mosquitoes are found in every country all over the world. Most people find them as pesky insects, but they do serve a purpose. Mosquitoes have a very broad niche. References:
http://wildhawaii.org/marinelife/turtles.html THANKS FOR WATCHING/READING :D