They have no natural enemies except man and power boats which are responsible for most manatee deaths- (in 1990, 218 manatees or 12 % of the total population were killed by boats), though the red tide (toxins released from the bloom of dinoflagellates) of 1982 and1996 killed over 15% of the population. It is suspected that environmental pollutions create disease vulnerability in marine mammals with manatees being no exception. An example is when 10,000 seals died in 1988 in Denmark and Sweden from viruses related to canine distemper. High concentrations of PCB’s were detected in necropsies of these seals, presumably from the water and fish they ate. Other threats include accidental
English Persuasive Essay In light of the recent shark culling issue, it has come to many Australian citizen’s attention that something must be done about this situation. It is a situation of ‘kill or be killed’ and the question must be asked as to which is more important: A human’s life or a shark’s life? Sharks already suffer enough from being slaughtered to be put in Shark Fin Soup or for medical research and should not be culled, as they are such an important part of the natural world we live in. Why else would they have survived for longer than the dinosaurs? It is imperative that we look after these majestic creatures and ensure they remain protected.
Litter sizes vary from one to 15 with White Tips are a commercially important animal to humans seeing as how its fins are used for shark fin soup and its meat and oils utilized for consumption, its hides are often used for leather as well. Many scientists have referred to this shark as the most dangerous shark in the world, despite the more notorious Great White and Tiger, the white tip is responsible for more human deaths then all shark species combined. With one incident alone, the torpedoing of USS Indianapolis on 30 July 1945, giving a minimum figure of between 60 and 80 sailors killed by sharks. While diving with these sharks is done often it is not advised. So Respect and Fear this great animal who is number 4 on animal planets deadliest
Orcas in captivity face premature death, “In the wild they have an average life expectancy of 30 to 50 years—their estimated maximum lifespan is 60 to 70 years for males and 80 to over 100 for females. The median age of orcas in captivity is only 9, and orcas at SeaWorld rarely make it even to the average life expectancy of their wild cousins.”(SeaWorld oh Hurt) Orcas need to swim up to a hundred miles each day but in the parks they are only confined to a tiny pool and forced to swim in the same space their entire life. Being in such small spaces, light has been shed on the fighting between killer whales. “Orcas who are not compatible are forced to live in tight quarters together. The resulting anxiety and tension cause fights between orcas.
With an average of 6.3 million kilograms of trash being pumped into our oceans every year, it won't be very long until they reach breaking point. One of the most common pollutants in our oceans is plastic. In the United States, it has been estimated that two million plastic beverage bottles are used every five minutes and that marine litter now contributes sixty to eighty percent of plastic. Estimates for plastic shopping bags range from five hundred to a thousand years to breakdown. This is potentially devastating in that plastic is often mistaken for food by marine animals,
The close proximity to land is a major threat to the harp seals, because they are closer to both natural predators and human commercial hunters. In efforts to protect the seals the Canadian Government has reconsidered laws currently placed on commercial hunting. Gabel’s article suggests the complete shutdown of commercial hunting. This change would have a major impact on the lively hood of commercial hunters. In order to counter balance the extinction of the harp seal pelt
About 4,000 people who lived there were evacuated by boat. The town of Futaleufu, with about 1,000 residents, was also evacuated. Smaller communities to the southeast such as Chubut and Rio Negro also received heavy ash falls. The ash plume was so thick in some parts of Argentina that schools, highways and airports were forced to close. Indeed, Chaitén was a major concern to both the airline industry and the neighbouring country of Argentina.
Many different kinds of fish live in the reefs as their haven for feeding, reproduction, and safety from predators. Without an ecosystem to live in, these fish species will become extinct. Ten percent of the world's reefs have been completely destroyed. Coral reef destruction is the worst, over 70% have been destroyed and only 5% can be said to be in good condition. What has happened to destroy so many reefs?
100 billion of the 380 billion are plastic shopping bags. • An estimated 12 million barrels of oil is required to make that many plastic bags. • Only 1 to 2% of plastic bags in the USA end up getting recycled. • Thousands of marine animals and more than 1 million birds die each year as a result of plastic pollution. • The United Nations Environment Programme estimates that there are 46,000 pieces of plastic litter floating in every square mile of ocean.
There are five main things that affect the ocean and harm it, Whaling, overfishing, factory fishing, global warming, and pollution. Every year the Japanese government kills mink whales. They kill at least eight hundred fifty of these whales. Factory fishing is also a major harm to the ocean. Factories create equipment that destroys species in the ocean.