World's rarest cetacean threatened by illegal gillnets

The world's rarest cetacean could disappear in less than four years unless immediate action is taken by the Mexican government to protect it from entanglement in gillnets deployed illegally in its Gulf of California refuge, ...

Making dams safer for fish around the world

Think of the pressure change you feel when an elevator zips you up multiple floors in a tall building. Imagine how you'd feel if that elevator carried you all the way up to the top of Mt. Everest – in the blink of an eye.

Hydraulic chamber tests fish survival

Australia's native fish could stand a better chance of survival when passing through hydropower turbines in major waterways thanks to an innovative mechanical chamber developed at UNSW, which is nominated for a top engineering ...

Artificial lung to remove carbon dioxide—from smokestacks

The amazingly efficient lungs of birds and the swim bladders of fish have become the inspiration for a new filtering system to remove carbon dioxide from electric power station smokestacks before the main greenhouse gas can ...

Cichlid fish: How does the swim bladder affect hearing?

In bony fish the swim bladder primarily serves for buoyancy Moreover, in many species it also possesses acoustic functions: it plays a role in sound production and improves hearing in numerous ways. Biologists around Friedrich ...

Examining evolution from a cellular perspective

The evolutionary processes of unicellular and multicellular organisms are continually under debate. John Torday, Ph.D., a lead investigator at Los Angeles Biomedical Research Institute (LA BioMed), has recently co-authored ...

Aggressive piranhas bark to say buzz off

Thanks to Hollywood, piranhas have a bad reputation and it would be a brave scientist that chose to plunge their hand into a tank of them. But that didn't deter Sandie Millot, Pierre Vandewalle and Eric Parmentier from the ...

Listening to the song of the toadfish (w/Audio)

(PhysOrg.com) -- Professor Roger Bland is listening in on one of the noisier creatures in San Francisco Bay, using physics to analyze the mating song of the toadfish. While fish don't have vocal chords, they have innovative ...

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