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Catch of the Day. CHOOSING SEAFOOD FOR HEALTHIER OCEANS

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It’s hard to think of sharks as victims. But that’s what they’ve become. From tiny cigar sharks that fit in the palm of your hand to massive whale sharks that are the largest fish in the sea and can grow to 15 meters long, the more than 350 species of sharks that swim along shores, patrol reefs, and dwell in deep ocean expanses have one thing in common: they are all doomed.

A few years ago, Julia Baum, a doctoral student in the Biology Department at Dalhousie University in Halifax, Nova Scotia, started looking at shark catch data from the northwest Atlantic. Tuna and swordfishing boats, which often catch sharks attracted to their bait or to the fish they chase, had kept good track of a range of shark species since the 1980s. “We found a really dramatic decline in just 15 years,” says Baum, whose work was later published in Science. The study covered a very large area and found losses in all shark species tracked.
For some, like hammerheads and threshers that are the victims of both tangling in nets and intentional fishing, the decline was over 80 percent. The least-affected species, like blue sharks, still declined by 50–60 percent.

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Informasi Detail

Judul Seri

WORLDWATCH PAPER 172

No. Panggil

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Penerbit

Washington, D.C. : Worldwatch Institute., 2006

Deskripsi Fisik

v. 75 hlm.

Bahasa

English

ISBN/ISSN

1878071807

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

PERIKANAN
ILMU KELAUTAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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