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North Atlantic Monster Shark Tournament.

A shark is weighed in New Bedford, Massachusetts, as part of the North Atlantic Monster Shark Tournament. Recreational shark hunting accounts for a growing proportion of shark catches. Credit: Maddie Meyer/Getty

Conservation biology

Fishing for fun takes a massive bite out of marine life

Hobbyists’ harvest of sharks and rays has soared, and catch-and-release is no solution.

The volume of fish caught recreationally more than tripled in the 60 years to 2014, and a recent uptick in recreational shark hunting is damaging fragile populations.

The United Nations agency that documents fishing statistics almost exclusively monitors commercial fisheries. To quantify the impact of pleasure fishing, Dirk Zeller at the University of Western Australia in Crawley and his colleagues reconstructed the amount of fish caught annually in 125 countries. The researchers analysed reports from events such as fishing jamborees and gathered data on factors such as the number of licensed recreational fishers per state to scale up to a global estimate.

The results showed that recreational catches increased from about 280,000 tonnes in the mid-1950s to around 900,000 tonnes in 2014. The hunting of sharks and rays for fun has been rising more steeply than other forms of recreational fishing since 1990, and now accounts for up to 6% of recreational catches worldwide. Although shark hunters often release the fish, a previous study of hammerhead sharks found that the majority of fish that were hooked and released died before reaching reproductive age.

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Coloured transmission electron micrograph of two Streptococcus sanguinis bacteria

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Microbiome

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The error-prone step at the heart of making an embryo

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Satellite image of broken iceberg B-44.

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Climate change

Antarctic rocks on the rebound could raise sea level much more than expected

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Monteverde Cloud Forest Preserve, Costa Rica

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Conservation biology

Forests that float in the clouds are drifting away

Tropical cloud forests are safe havens for a vast range of creatures and plants, but they are under siege around the globe.
Illustration of a brown dwarf

A rapidly spinning brown dwarf (pictured, artist’s impression) tends to have narrow atmospheric bands; the faster the spin, the thinner the bands. Credit: NASA/JPL-Caltech

Astronomy and astrophysics

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