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Friday, June 22, 2007

Until When Killer Whales Scare us

In the last five decades transients cannot find food easily. Whalers tried to hunt whales with better equipment in 1950s and reduced their number. There were 30 million tons of whales in the Bering Sea and North Pacific. In 1985 the International Whaling Commission stopped hunting; there were only 3 million tons. Killer whales ate lots of harbor seals in 1960s-1970s. In 1980s they ate sea lions, which is about 2,200 pounds. Sea lions came under the endangered species act. Because of the decrease in sea lions and harbor seals, killer whales also ate about 7 sea otters daily to get their needs. In 1990s more than 50,000 sea otters disappeared because of the whales. In the Southern Hemisphere killer whales attacked elephant seals and they decreased from 450,000 to 280,000 between 1970s and 1980s. Scientists could not understand the theory of killer whales. They guessed that orcas kill marine mammals. Yet there are decreases in minke whales because of orcas. They are not sure that the killer whales are killing seals, sea lions and otters in the Arctic.

What can the Arctic people do against killer whales? Whales are dangerous for people and marine mammals. People should do something against that danger. There are three ways to protect sea animals from killer whales; deposit them, hunt and kill them, and hunt sea animals and save them.

First, deposit killer whales away from other sea animals. This solution may be hard or require willingness. Hunters can let harbor seals; sea lion, sea otters and elephant seals live on the beach and the whales in the bottom of seas. When they deposit whales, other animals can live in peace and people can eat them.

Second, we would hunt and kill them. If hunters kill whales, that will decrease the amount of them. When hunters cut the number of whales, it can be better for sea animals’ lives. That will make a decrease in whales and increase in marine mammals.
Third, we can hunt marine mammals and save them. People can save some sea animals for a long time to protect them from killer whales. In that way people can eat marine mammals longer. That can be a step by step, compete with killer whales.

In conclusion, killer whales threaten people and sea animals’ lives. We have to move quickly against this problem to stop this attack. Deposit them, hunt and kill them, hunt sea animals and save them. These solutions could limit some of whales’ harm.


Reference:

Harden, B, (May 21, 2004). Wild ones: are gangs of orcas feasting on protected
seals, sea lion, and otters because we fished their normal food supply out
of the oceans? Retrieved June 11, 2007 from
http://discovermagazine.com/2004/apr/wildones/article
_view?searchterm=are%20gangs%20of%20orcas&b_start:int=2.

Monday, June 11, 2007

Killer Whales in the Arctic

According to Bob Weber there is an attack in the Arctic from killer whales. There is research about the growing number of killer whales because of the melting of the ice in the oceans of the Arctic. In 1980s federal researcher Mr. Higdon has finished recording how many times they found the sleek black-and-white killer. Mr. Bay said according to what the hunters and scientists saw, there are about 30 killer whales every year in the western water. Mr. Higdon got information from a natural protection agency. In addition, Arctic tourists have experienced that too. He said his study confirms the relationship between the increase and the decrease of sea ice. Mr. Bay said the augmentation of killer whales is related to the decrease of sea ice. The U.S space office mentions two studies. First, sea ice melted quickly because of the temperature. In 2004 to 2005 winter sea ice lessened from 10 to 15 times more than what it was in 25 years ago. Second, they found about 40 per cent less ice in one of the eastern Arctic areas in two years. Minimizing sea ice causes problems for the animals like polar bear. The killer whale assaults sea animals but there are no reports about polar bear. The hunters are worried because there are not enough sea animals. Killer whales are bad for the other whale inhabitants. Humans can catch pods because killer whales chase them to the beach. Hunters used to kill killer whales, but they stopped in the 1970s. The federal government records whales sounds underwater. Mr. Higdon said they want to divide up killer whales from the other sea animals’ sounds. Mr. Nirlungayuk said that using kayaks is a kind of danger, but they do not use it any more these days because of the bigger boats.

What will Inuit do with killer whales in the Arctic? Killer whales bother the Inuit, because they attack marine mammals. This causes decrease in the sea animals in the Arctic, and there is not enough food for population. Inuit should stop using sea animals and leave killer whales to live in the oceans.

First, people should eat fewer sea animals. Killer whales are attacking marine mammals, which causes a decrease of sea food. If hunters continue hunting it, while killer whales attack it, marine mammals will disappear soon. Sea animals are food for killer whales and for population too. The sea animals are the only things that killer whales can eat.

Second, there are many different food resources. Inuit depend on seafood instead of other sources. They can let killer whales eat sea animals, and eat land animals and vegetables. People can change their diet and find a replacement to save their lives.

Third, the population can have a new food source, which is killer whales, since killer whales cause the dying out of sea animals. If hunters catch killer whales, people can eat them instead of sea animals. In addition, that will reduce the amount of killer whales and raise the number of sea animals. In that way people can get sea animals and use killer whales in a useful way.

Some may say that the Inuit have to keep the Earth cool to increase sea ice and decrease killer whales. It is good idea, but how they can keep Earth cool? People cannot control the space or climate. The Arctic population cannot segregate killer whales, because there is no way to fix this problem. People may stay with killer whales and let them live on sea animals.

The population can let killer whales exist in the oceans and eat what they can eat. People could discontinue eating marine mammals and use the other resources to eat, or use those killer whales. Any stroung there is stronger than him.

Reference:

Weber, B. (2007, January 19). Killer whales invading Arctic. LexisNexis. Retrieved May 30 2007, from http://lexisnexis.com/universe/document.

Animals' death causes

The world is changing in a bad way. There is problem with the water, which causes reduced fish in oceans, dead birds on the beaches and a lesser amount of plankton. All these problems relate to global warming, pollution and greenhouse gases.

First, global warming has bad effect on climate. Animals cannot live in different weather than are what they used to living in. Bears used to sleep the whole winter and wale up in spring, but they could not this year because of global warming. Global warming makes the weather difficult to animals’ life.

Second, the pollution is killing us. Some factories spill surplus chemicals in oceans that cause pollution on the oceans. Those chemicals kill fish and other sea animals plus people if they eat this fish. What should we do to stop pollution?

Third, greenhouse gas (GHG) occurs naturally in the atmosphere. Greenhouse gas is the reason for many problems such as global warming, Climate alteration is probable to move up sea level, change precipitation. It could also affect human health, animals, and many types of ecosystems.

Somebody says global warming does not have bad effects on the animals. This idea is wrong, because the changes in the weather effect animals lives. Animals and used to living in specific temperature. Because of the global warming, oceans have become not good place for fish and sea animals. Climate is one of life’s foundations, and it is supposed to be convenient for them.

In conclusion, global warming causes much harm in the earth. Global warming, pollution and greenhouse gases are some of the bad climate’s causes. We should try to reduce the functions that we can control. Can we?