Recently, the famous clear waters of Crater Lake and the Mazama Newt that resides there have been threatened by the expanding crayfish population. In 1915, humans wanted to provide food for the non-native fish in the lake, so they introduced crayfish. In addition to threatening the newt, a drastic change in population threatens the magnificent clear waters of Crater Lake. Officials have attempted to place large, metal underwater barriers to try and slow the spread of the crayfish. The 18-inch tall metal barriers would be placed in certain spots around the lake, perpendicular to the shoreline, similar to a wheel and its spokes.
Next Hammerhead sharks gets there name for its flat shaped head and some people think it is useless to the shark. With their special heads, they have 360 degree vision! Finally, they also can ram and stun jelly fish with their flat head. In conclusion, with these reasons I think we should save the hammerhead shark before it too late.
After 25 years at SeaWorld Tilikum started to show an abnormal and repetitive behavior where he would chew on metal gates and on the concrete sides of the tanks which has caused his teeth to warn down. The stress of being in captivity has also caused him to be aggressive towards humans and because of that there have been 3 death: One being Keltie Byrne in 1991, the second attack was to Daniel P. Dukes in 1999 and the most resent one the death of Dawn Brancheau in 2010. In my opinion the death of Dawn has been the most famous in SeaWorld because there is more information about her death than the others and also is the most recent death at SeaWorld. According to the documentary "BlackFish" Dawn died when Tilikum grabbed a hold of her upper arm and pulling her underwater while he was doing that he dismembered her and broke most of her bone then he
The quality of the water you fish also makes the difference in your bass fishing tactics. In muddy water, for example, the bass uses their sonar to locate food. So choose lures that vibrate well and maybe make noise. In clear water, however, the basses are very cautious and suspicious of something unusual. So you need bright lines and lures that look a lot like local food sources.
I think Killer Whales should not be in captivity because, of the injures they can get in their tanks, how they get stressed out and they are better in the wild. The first reason why I think should not be in captivity is of what happens in their tank. The first piece of evidence from the PETA practical “Aquariums and Marine Parks” is that since the tanks for the orcas are usually small for them, they get insane because of the echolocation they use. This makes me think that since their fin sometimes curves, that they would get injured while swimming. In addition, this might make the whale die faster than what they are supposed to live to.
There is a huge problem with finning for shark steaks or shark fin soup. Because of this, some shark species have dropped by 90 to 50 percent (Choi). In the 80s commercial fisheries made the population of sharks go down even further. Approximately 20 to 100 million sharks are killed each year due to fishing (lovgren). This has caused the total shark population to drop 30 to 50 percent
Rikki-tikki-tavi is washed away from his mongoose family by a summer flood and humans save him. A human family saves him. He defends Teddy and his parents, who are humans, from cobras that are very dangerous at the bite. The “Rikki-tikki-tavi” movie and book of “Rikki-tikki-tavi” are similar and different because Rikki-tikki destroys Nagaina’s eggs, Teddy gives Rikki-tikki a treat, and Darzee sings his songs about Rikki-tikki’s triumphant
Sergei says he doesn’t want to be interviewed, but Yonaton sneaks into his house anyways. Now, Sergei actually has this magical goldfish, and when Yonaton sees it, he gets super excited, causing Sergei to kill him. Sergie only has one wish left, and struggles on the fact of using it to bring Sergei back alive. We learn from his past that Sergei has a hard time trusting people, and wants to keep the fish as his company. Ultimatley, Sergei does bring
Loggerhead Turtle Argumentative Essay Andrew J. Thorpe English 6 Mrs. Tubergan Due 1-29-16 Did you know that one-thousand out of every ten-thousand Loggerhead Turtles will survive to adulthood. Many loggerhead turtles are being killed each year. There are many human caused threats and animal caused threats. Fishermen’s nets get broken because the turtles get caught in them and they don’t get saved unless somebody happens to stumble upon it. In this paper I will be talking to you about how we can save turtles from these big threats to Loggerhead turtles and about what these threats are doing to the Loggerhead Sea Turtles.
Zebra mussels are a big problem because they cost the economy lots of money, eat up almost all of the plankton, and they hurt aquatic life. My first reason we should rid of the zebra mussel is because they cost the economy lots of money. According to the article Zebra Mussels by MNDNR, “Zebra mussels can be a costly problem for cities and power plants when they clog water intakes.” They cost America 5 billion dollars a year just to replace things this small mussel has ruined. My second reason that we need to remove the zebra mussels
For many it’s a first pet, a gift from family, something you won as a prize at a carnival, but for Canadian residents the familiar orange goldfish everyone knows and loves is becoming a serious problem. Some flush them in a hurry because they no longer want to take care of them, others commit them to a porcelain vortex because they believe their beloved fish has passed, and the Canadian Government is issuing a warning now to citizens of Canada to stop flushing their fish. Just a few goldfish with the potential to disrupt an entire ecosystem Goldfish are entering the ecosystem the way that a lot of invasive species end up in an environment they don’t belong, Humans are putting them there. Human interference is one of the leading causes of the beginning of over population of invading alien species. In this case many of the fish are going down drains, and ending up in Canada’s lakes and rivers.
The oyster hatcheries are affected because the baby oysters, or larvae, need calcium carbonate to build their shells, but it is replaced by the emitted carbon dioxide. The pH, or calcium carbonate will have gone down by 50% by mid century, according to the article, “Are Oysters Doomed?” The larvae dissolve in acidic water because they don’t have the nutrients to make their shells. If the oyster hatcheries don’t have the larvae to give to the oyster farms, then they can’t support the industry which is very large in Washington. Infact, the video Acidifying Water Takes Toll On Northwest Shellfish, says that the oyster industry supports 3,200 jobs in Washington state and brings in $2.7 million a year
Ironically he can’t swim and when he doesn’t resurface his wife and friend George assume he drowned. In reality though he had transformed into a fish. The fish Limpet, while having some underwater adventure, discovers that he can perform an underwater “roar.” Even though he is a fish, Limpet is still determined to help the Navy. Limpet searches around and finds a convoy and requests to see George. With George 's help he becomes enlisted in the Navy
Im going to tell you about angel fish and sea goblen.First paragraph is going to be about angle fish.The second paragraph is going to be sea goblen.Then im going to do my concusion.Then i should be done with my story. Angel fish can be diffrent colers.A queen fish is called a marine angelfish. She is the most beautiful angel fish.There are other kinds of angel fish too.Lets go have a look at them to.Theres regal angalfish,young french angel fish,and long finned angelfish. Sea goblins are DANGEROUS.Some goblins look like like there were wering redlipstick. A goblin shark can grow up to 12 feet long.They are more than 100 years old.The upper jaw has26 of thin teeth, while the lower jaw has 24 teeth.The goblin shark sets a unique trap for its pray.The creature can push its jaw outwards and its throat to create a strong sucking action.This pullsthe pray into the sharks jaw so it can then grab it with its razor sharp teeth.