Feeds

Great white shark's oceanic adventure

From Cape Town to Oz, and back again

Bridging the IT gap between rising business demands and ageing tools

A great white shark has stunned conservationists by going on a marathon journey, probably in search of a mate. Originally tagged off the coast of South Africa, the shark was tracked by GPS on a journey all the way across the Indian Ocean to Australia and back again.

The research team thinks journeys like this must be pretty common among great whites, since they are studying a relatively small group, just 20 or so animals, and it would be very unlikely to have chanced upon totally abnormal behaviour.

The shark, a female named "Nicole" after Nicole Kidman, seems likely to have been in search of romance. The research team, drawing on expertise at the University of Cape Town and the University of Pretoria and led by Ramon Bonfil of the Wildlife Conservation Society in New York, says the trip is too long a journey to make for food, and Nicole did not linger in Australian seas.

"There's plenty of food around South Africa and she would be using too much energy to just go to Australia to feed. Of course we can't prove this at this stage, it is just a hunch," Dr. Bonfil told the BBC.

Nicole was no slouch on her journey: she travelled from Gansbaai, not too far from Cape Town, to Australia in just 99 days. Within six months, she was back home in her native waters. The round trip is a whopping 12,400 miles, and Nicole's journey is the fastest known return migration of any swimming animal, the researchers say.

Nicole was tagged in November 2003 with a pop-up archival tag. These are attached to the dorsal fin, and at a predetermined time, will detach themselves and float up to the surface.

Deon Kotze of Marine and Coastal Management (MCM), told South Africa's Independent Online: "We were really surprised. We didn't expect one of the sharks to go to Australia, and we didn't expect it to come back again. It shows how little we know about them."

DNA evidence has previously suggested that there is some exchange genetic between white shark populations of South Africa and Australia, but no behavioural evidence has been observed to support this - until now.

"It’s clear that we have only uncovered the tip of the iceberg; there is still much to learn about great white shark migrations, why and how they find their way through such vast distances, and how populations are related," Dr Bonfil said.

Mobile application security vulnerability report

More from The Register

next story
Malaysian Airlines flight MH17 claimed lives of HIV/AIDS cure scientists
Researchers, advocates, health workers among those on shot-down plane
Mwa-ha-ha-ha! Eccentric billionaire Musk gets his PRIVATE SPACEPORT
In the Lone Star State, perhaps appropriately enough
All those new '5G standards'? Here's the science they rely on
Radio professor tells us how wireless will get faster in the real world
The Sun took a day off last week and made NO sunspots
Someone needs to get that lazy star cooking again before things get cold around here
Boffins discuss AI space program at hush-hush IARPA confab
IBM, MIT, plenty of others invited to fill Uncle Sam's spy toolchest, but where's Google?
Microsoft's anti-bug breakthrough: Wire devs to BRAIN SCANNERS
Clippy: It looks your hands are shaking, are you sure you want to commit this code?
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.