Even great white ones will avoid a surfboard or kayak that is fitted with LED lights, a biologist says
21 November 2024 - 05:00
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An experiment off the Mossel Bay coast hopes to save surfers from sharks, whose poor eyesight often leads these predators to believe the boarders are tasty seals. Laura Ryan, an Australian surfer and biologist, is conducting the experiments with LED lights attached below decoy seals. She says her research shows the lights put off the sharks. If done to surfboards and kayaks, occupants will be safe from sharks, especially the great white ones, she says.
2. Small brain, high IQ
Dogs with small brains are smarter, according to new canine research. In general, animals with more impressive cognitive abilities tend to have brains that are relatively large compared to their bodies. Not so dogs, says Ana Balcarcel of Montpellier University in France. She led the research, which found that smaller brains suggest “enhanced cognition” in canines. Retrievers, Rottweilers, huskies and collies are smart, not so much Jack Russells and Chihuahuas.
3. Editorial incentives
Fraser Nelson, who last month retired as editor of The Spectator, was known to have run a well-oiled machine. This could have been down to a standing order at the UK magazine that its fridge should always have at least two bottles of Pol Roger champagne chilling. His own office was well stocked with expensive whisky that he regularly measured with a spirit level.
Support our award-winning journalism. The Premium package (digital only) is R30 for the first month and thereafter you pay R129 p/m now ad-free for all subscribers.
DINNER PARTY INTEL: The lights that fool sharks
Even great white ones will avoid a surfboard or kayak that is fitted with LED lights, a biologist says
1. Undersea safety lights
An experiment off the Mossel Bay coast hopes to save surfers from sharks, whose poor eyesight often leads these predators to believe the boarders are tasty seals. Laura Ryan, an Australian surfer and biologist, is conducting the experiments with LED lights attached below decoy seals. She says her research shows the lights put off the sharks. If done to surfboards and kayaks, occupants will be safe from sharks, especially the great white ones, she says.
2. Small brain, high IQ
Dogs with small brains are smarter, according to new canine research. In general, animals with more impressive cognitive abilities tend to have brains that are relatively large compared to their bodies. Not so dogs, says Ana Balcarcel of Montpellier University in France. She led the research, which found that smaller brains suggest “enhanced cognition” in canines. Retrievers, Rottweilers, huskies and collies are smart, not so much Jack Russells and Chihuahuas.
3. Editorial incentives
Fraser Nelson, who last month retired as editor of The Spectator, was known to have run a well-oiled machine. This could have been down to a standing order at the UK magazine that its fridge should always have at least two bottles of Pol Roger champagne chilling. His own office was well stocked with expensive whisky that he regularly measured with a spirit level.
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