Shark is a wild thing
we know that sharks live in wilderness. the ocean is a wet jungle and shark is one of predator that is unique and endangered species. it’s not like other fish, shark has become a great influence in human businesses. the researches and entertainments found that shark is very unique and has high commercial value. we find many movies with shark in them and it’s still attracted us to go to cinemas watching them. the researches about shark has develop into various aspects, even such as cosmetics and food.
for some people,shark is described as power and speed. it represents what we want to be. and some people try to keep sharks as their pets. nowadays researches help us to keep shark in special conditions, and put shark on aquarium isn’t difficult for now. but, imagine that you have a huge aquarium at your house with a shark in it. it looks cool ,but soon we will find it’s ridiculous. shark is no longer happy in that condition.
some of us have cats, birds, dogs and other small pets in our house. if you have shark in your house,then you are supporting shark’s extinction. to keep the shark live,we need the biggest aquarium on earth,that is ocean. the ocean provides the shark’s needs,including food and shelter. we can only observe them and leave them live peacefully. the shark is one of ocean’s wonders that we must keep in order to show our pride to the next generation of humankind.
Sharks Food
- Sharks and rays have a very varied diet. They are carnivores which means that they eat animals rather than plants and algae. Some sharks commonly eat bony fishes, crustaceans (crabs, lobsters, and other animals with an external skeleton), mollusks(snails, sea slugs, octopus and squids), and different types of worms.
- A shark’s diet is often determined by its habitat. For example, sharks that live out at sea (pelagic sharks) are more likely to eatfish and squid because that is all that is available.
- Sometimes sharks change their diet as they get older. The Great White Shark mainly eats fish when it is young but once it reaches maturity it consumes more marine mammals like seals and sea lions.
- Most sharks prefer live food but they will also consume carrion (dead fish and other animals) that they find on the sea floor.
- Just like filter feeding whales, there are a few sharks that live by filtering plankton from the water. The filter feeding sharks may consume phytoplankton (microscopic plants and algae) while hunting for more nourishing zooplankton (tiny animals and larvae that drifts around on the currents). Ironically, the Whale Shark which is the largest fish in the sea, lives on plankton which is one of the smallest animals. So does the second largest fish; the Basking Shark. Although these sharks have huge mouths, their throats are tiny and they are unable to eat anything larger than a grapefruit. Their teeth which are no longer needed for feeding, have become very small.
- The largest ray (the Manta Ray) is also a plankton feeder. It has a flexible projection on each side of its mouth called cephalic lobes that it uses to funnel plankton towards its mouth.
- Most rays eat small fishes and benthic invertebrates; crabs, snails, and worms etc. that live on or under the sand.
- Sometimes its possible to tell what type of food a shark eats by the shape of its teeth. Sharks that catch fast swimming fishes tend to have very pointed teeth that help them grasp the fish. Sharks that eat hard shelled animals have flattened teeth that form a plate to help them crush the creature’s shell like a nutcracker.
- Tiger Sharks have a reputation for eating anything. They have been found with all sorts of strange things in their stomachs from clothes to license plates. Tiger Sharks have very sharp serrated teeth that are strong enough to bite through the shells of marineturtles.
Shark Alliance
The Shark Alliance was formed in 2006 in an attempt to streamline the efforts of NGOs involved in shark conservation. The Alliance is able to utilize the manpower, resources, and combined knowledge of its member organizations to more effectively lobby for sustainable European and global shark fishing limits. Members of the Shark Alliance include The Shark Trust, the European Elasmobranch Association, and The Ocean Concervancy, among others.
In its own words:
The Shark Alliance is a not-for-profit coalition of non-governmental organizations dedicated to restoring and conserving shark populations by improving European fishing policy. Because of the influence of Europe in global fisheries and the importance of sharks in ocean ecosystems, these efforts have the potential to enhance the health of the marine environment in Europe and around the world.
The mission of the Shark Alliance is two-fold: To close loopholes in European policy regarding the wasteful and unsustainable practice of shark finning; To secure responsible, science-based shark fishing limits for long-term sustainability and ecosystem health.
Sharks have evolved over 400 million years and play a critical role in ocean ecosystems. In common with land predators such as lions and wolves, sharks keep other marine populations in check and help maintain the balance of life in the sea. Today, primarily because of overfishing sharks are among the oceans’ most threatened animals. Tens of millions of sharks are killed each year, either intentionally or as bycatch in commercial and recreational fisheries. Ongoing assessment of the status of European sharks (and closely-related rays) by the IUCN (The World Conservation Union) has led to the classification of roughly one third of evaluated species as threatened (either Critically Endangered, Endangered or Vulnerable), with another 16 per cent at risk of becoming so in the near future. Sharks generally grow slowly, mature late and produce few young. Shark populations are therefore especially vulnerable to overexploitation and slow to recover once depleted. The loss of these important predators is predicted to have negative effects on many other species in the sea. Unfortunately, however, misinformation and fear all too often impede the public support required to ensure sharks receive management priority and conservation actions. Unlike many countries that fail to conserve sharks, Europe does not lack the resources to restrict fishing. Despite immediate threats facing sharks there are few European limits on shark fishing, and quotas are routinely set far in excess of actual catches. In 2003, the EU adopted a ban on shark finning (the wasteful practice of slicing off a shark’s fins and discarding the carcass at sea), but at the same time allowed glaring loopholes that render the ban all but meaningless. For instance, shark fishermen are allowed to land shark carcasses and fins separately, making it all but impossible to tell how many sharks have been processed on board and how many were subjected to shark finning. Meanwhile, the fin to carcass ratio (the means of checking that the number of fins corresponds to the number of carcasses – after sea processing – is within the ban’s limits) is the highest and therefore the most lenient in the world. Europe is home to the some of the world’s largest fishing fleets while its powerful fisheries officials exert influence on international fishing restrictions in many regions of the globe. Poor European shark policies, therefore, pose threats not only to shark populations in European waters but also to those around the world. If fisheries are managed carefully, sharks can provide a steady source of food and recreation and help keep the oceans in balance. The Shark Alliance is dedicated to ensuring that these valuable yet vulnerable animals survive and thrive for the benefit of ocean ecosystems and the people that depend on them. Save buying products with payday loan
White Shark Trust
The South African based White Shark Trust is “a non-profit organization founded in 2002 to promote and conduct research, education and conservation projects on the endangered Great White Shark”
It is the brain child of Michael Scholl (founder and trustee) who has been conducting research on Great White Sharks since 1997.
The goals of the White Shark Trust are as follows:
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To establish a fund in the Republic of South Africa for the purpose of receiving grants and donations from international sources as well as sources within the Republic of South Africa;
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To manage and disburse such funds in the furtherance of the objectives of the Trust;
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To promote dialogue between various research, conservation, education and Government bodies concerned with management, research, conservation and education concerning the Great White Sharks (Carcharodon carcharias);
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To assist in providing relevant advice on the management of the Great White Sharks (Carcharodon carcharias);
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To obtain the support for the objectives of the White Shark Trust from local residents living around concentration hotspots for the Great White Sharks (Carcharodon carcharias), including Mossel Bay, Dyer Island / Gansbaai and False Bay in particular;
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To obtain the support for the objectives of the Trust from the established tourism industry involved with the Great White Sharks (Carcharodon carcharias) located at Mossel Bay, Dyer Island / Gansbaai and False Bay in particular;
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To ensure that effective action is taken in all matters affecting the welfare and preservation of the Great White Sharks (Carcharodon carcharias);
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To promote educational opportunities for the general public, schools and the tourism industry;
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To conduct and support scientific research projects and field expeditions with regards to the Great White Sharks (Carcharodon carcharias).”
In connection with other like-minded South African organizations, the work of the White Shark Trust is of primary importance in order to better understand the critical role that White Sharks play in balancing the marine environment. Without their joint efforts we are unable to identify the need for better shark protection.
