Threatened species of sharks

Visualization of narrower problems
Overfishing sharks
Finning sharks
Sharks are evolutionary survivors that have existed for more than 400 million years.
Sharks have been fished commercially in the USA waters only since the 1970s. That caused stocks to plummet by as much as 80 percent for some Atlantic species. In 1997, 22 species of coastal sharks were classified as overfished or fully fished, meaning no additional increases in fishing could be tolerated without endangering the health of the population.

In Costa Rica, a company that marketed crushed shark cartilage to western pharmaceutical firms as a cancer remedy saw its monthly production soar from 1,400 to 10,000 kilograms in 1997.

1. Lopping off the top predator in the marine food chain could have disastrous consequences on the complex web of life in the sea.

2. Even with tougher fishing quotas it will take years to restore shark stocks. One reason is the lack of an international treaty on shark fishing, similar to the global accords that limit commercial catches of blue-fin tuna. Another factor is biological. Sharks are slow to reproduce, having long gestation periods and small litters.

1. Sharks have no merit except as movie villains.

2. There is no problem with any of the shark stock. Restrictions on shark fishing are being done just because of pressure from environmental groups.

3. There is a hope for full recovery of the shark stocks. For some reason people seem to be very concerned about the plight of sharks. There is a public fascination with these powerful predators that no other fish species can begin to rival.

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(J) Problems under consideration