Sonar: Comparing Dolphins And Whales

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.

A young boy sits on the floor gazing up in amusement as his parents tell him stories that have traveled from generation to generation. Whether it be a tale of malicious war or brave acts of heroism, the little boy will always remember the impactful tales. But what about the parents; what is their motive for telling tales to their child? People tell stories for different reasons; a best selling author may write his story to sell books. While a parent tells a story to set their child straight, others simply want the thrill of telling tales of their adventurous life. For The Tao Jones ,or TJ, in Chris Crutcher's Whale Talk, the most impactful story he will hear and tell is his own. Someone might not solely tell their own story but, are also able to tell the story of those around them. Superficially, TJ’s story is one of brutal negativity and oppression. However, beneath the surface TJ and other peoples’ tale, is one of the unbreakable bond of brotherhood, unique self identity, and last chance at redemption.

At this point in time, it is getting harder and harder for a man to surprise the love of his life with an engagement ring and the word, “Will you marry me?” Countless men have gotten on bended knee on the beach, at a football game, cruise ship, and the spot where they met their partner.

With success come some of the greatest stories of how people got to that spot. If you do try for something almost never will you be rewarded for that particular thing. This plays a role in both of the following books. In Whale Talk TJ must give this team and swimming his all to get what he wants in getting his team a varsity letter. When new requirements set back the team from getting their varsity letter TJ take it upon himself to lead and set an example for the rest of his team. Notably, in the book Summer Ball after Danny finds out about what people actually think about him. He takes accepts it and goes harder in camp. He takes nothing for granted anymore.

As newer research began during the 1900s, the sonar started to make changes and new developments. Active sonar, provides pulses of sounds and listening for echoes. Gives warning if an object is in the path and returns an “echo” to the sonar transducer. The transducer can determine the range and orientation of the object. Passive sonar systems are used primarily to detect noise from marine objects (such as submarines or ships). Unlike active sonar, passive sonar does not emit its own signal, which is an advantage for military vessels that do not want to be found or for scientific missions that concentrate on quietly “listening” to the ocean. The purpose for both sonar’s is to detect the acoustic signals emanating from external

Cetacean bycatch in fishing industries has been a highly debated topic for decades and is still considered an ongoing problem(NOAA 8). However, when it is looked at in comparison, the problem of bycatch has already been solved as much as is possible while still allowing fishing industries to fish at all. Bycatch is defined as any marine life that is caught and returned to the sea, whether it is dead or alive(Brooke 2). Therefore, many marine animals that are considered bycatch are not harmed in any way. Including these animals, the national bycatch ratio is still low(Brooke 3). Many actions have already been taken since this has become an issue that has reduced bycatch by an incredibly large amount. In many areas, the amount of bycatch compared to the amount of fish that the fisheries in that area take in is only a small fraction(Brooke 3). There will always be bycatch in fishing, even if a single fisherman is fishing with a single

Megan Bergman’s story “Yesterdays Whales” discusses a woman’s choice to have an abortion, which is a highly debated topic in today’s society. In 2015, 50% of the people in the US were said to be pro-life and 44% of people said to be pro-choice. Becoming pro-life means that you would believe a pregnant women must have the baby and that it would be wrong to abort it. Deciding to be pro-choice is not viewing someone negatively if they want to abort it. There are so many different opinions on the matter, which have changed throughout the years. Of course everyone has different opinions about it but whatever their decision is, they should be confident about it. People really should make decisions for themselves rather than letting others choose their fate. Just one decision could change your whole life in just one second. Although there is good and bad in choosing pro-life there can also be both in choosing pro-choice. Although there is controversy, Bergman does an excellent job portraying throughout her story that women should have a choice for their own bodies.

In the article, “Sperm Whales and Killer Whales with the Largest Brain of All Toothed Whales Show Extreme Differences in Cerebellum” the author Sam H. Ridgway studies the cerebellums of the most widest distributed whales in the world. The killer whale and the sperm whale both have huge brains, but this study suggests why the killer whales have a significantly larger cerebellum than that of the sperm whale. After collecting, measuring, and preserving the species, the skull was ready to be chipped away and the brain ready to be taken from the massive cranium. Once extracted, the brain was measured to determine the cerebellar volume: (length of cerebellum base × width of the base × height × 1/3).

Recent Off-Shore drilling in the United States in the Atlantic Ocean has had a very negative effect on Bottlenose Dolphins. The noise caused from drilling has negatively affected their ability to communicate effectively. Recently off-shore drilling has increased to help create more jobs in America however, the Bottlenose Dolphins have been paying the price. Off-shore drilling creates lots of boat traffic around the drilling areas which interferes with the dolphins ability to communicate through echolocation. However the main interference with dolphins communication has been caused by seismic testing from these boats. Seismic testing is when loud blasts of compressed air are sent deep into the ocean to bounce off the seafloor to test to

Radar (Radio Detection and Ranging) is a method of detection that works by sending out radio waves and detecting any reflections from distant objects. Created by Christian Hülsmeyer, a German scientist, in 1904, the invention first became useful in World War 1, where it was used to determine the location of enemy planes.. Once World War 2 began and U-boats were once again roaming the Atlantic, the Allies knew that they needed a means of detecting the location of these deadly submarines. Radar could essentially “see” things as dots using radio waves, and although it was not created to specifically detect U-boats, it became a technological weapon that the allies could use for their benefit. Additionally, Sonar (Sound Navigation and Ranging) was built specifically to counteract the threat of underwater enemies such as the U-boats. Sonar uses sound waves to detect distant objects. Similar to radar, the use of sonar allowed the British surface fleet to detect the direction and depth of these submarines and destroy many of them. What makes these two technologies similar is that they both locate enemy ships using waves that could not be seen and they could do it at such a distance that the Germans would have no way of interfering and stopping them. This advanced technology was a detriment to the U-boats because the German Navy could no longer surprise the Allied forces.

After reading the three versions of “Whales”, the third version is the strongest. Its thesis statement is the second sentence of the paper: “Scientists studying whales rate their intelligence on a level with higher primates because of their complex group behavior.” The writer also clearly voices their opinion within the piece. The attitude and tone in “Whales” is a perfected mix of professionalism and personal stance, a balance between fact and opinion. The intended audience may be high schoolers in a classroom because of the paper’s writing style. The language and the rhythm of the piece give it strength. Yet there are weaknesses as well. Some ideas I have to revise it so that it is better includes adding more detail to the fast facts and

I can hear the sound of a 38 special, pistol, going off. It sounds like the great Josey Whales. Josey Whales and I are similar in numerous ways. We both enjoy being in the wonderful outdoors. The outlaw of Josey Whales is probably my favorite old western movie ever. We both are good with a gun. I think if Josey and I teamed up, nobody would be able to stop us. We both are good to people. That is my favorite thing about Josey. As can be seen, Josey and I are similar in many ways.

While we were excavating the palace of Knossos we found many different and interesting artifacts. Some of them included “The Fresco of the leaping bull”, “The fresco of the three women”, and “The Dolphin Fresco”. All of these Artifacts were based on natural elements of the world which made them all important. On The Fresco of the leaping bull the bull was the subject worship. It has been suggested bulls may have had some religious significance, the bull compared to the human leaper may give an idea of the Minoans power of the animals. The fresco of the three women to me kind says that those three women are superior and that relates to the social structure that goddesses are superior so I kinda feel like they are some type of goddess. The Dolphin

This includes a range of echolocation clicks in the dolphin sonar system used to identify objects underwater.

Have you ever saw something move around you in the ocean ,or saw someone run out the ocean because there something in there? Sharks and dolphins can be similar or different by their trait, diet, and habitat.