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Car Tech

Fish-bots Could Lead to Safer Cars

Engineers at Nissan Motor in Tokyo have developed robots that mimic the collision-avoiding behaviors of schools of fish, with the hope of one day incorporating the technology to make cars safer. The fat, adorable, quizzically Japanese-looking creatures roam in groups of seven and escape crashes by sharing information from laser range finders with one another via radio, allowing the group formation to change safely as they ride. Nissan will demo the fishbots at CEATEC next week.

We're not credentialed ichthyologists here at Switched, but those 'bots look and act like no fish we've ever seen. Apparently some fish do actually make sounds and have the ability to hear, but not by radio waves. And seriously: these robot fish have frickin' lasers!

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Visionaries

Robo-Fish Swim Just Like the Real Thing


It's good to hear that engineers at the Massachusetts Institute of Technology (MIT) are starting to spend some time outside every once in a while. Pablo Alvarado, a mechanical engineer, and his colleagues at that prestigious university must have done so in developing their latest project: the robo-fish.

Between five and eight inches long, the prototypes are comprised of a mere 10 movable parts and covered with a highly flexible, water- and heat-resistant polymer. Modeled to swim (check out a video after the break) like their aquatic inspirations, the robots can apparently accurately imitate the movements of freshwater bass, trout and tuna. While so specifically mirroring natural movements might seem like a gimmick, Alvarado and his associates are actually delving into biomimicry, which hinges on the idea that -- in many cases -- nature's design is the best one.

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Tagged Fish Found 8,000 Miles Away From Home, In a Bird's Stomach!

Tagged Fish Nearly 8,000 Miles From Where Expected

When researchers at a Washington State fish hatchery implanted one of their tiny steelhead fish with an electronic tag in 2005, they expected to find the little guy to the northwest in the frigid waters near Alaska, where many of the fish end up.

The steelhead's tag, a tracking device similar to those used in household pets, was, much to the researchers' surprise, recently found in the stomach of a baby bird nearly 8,000 miles away on an island, charmingly called Big Moggy, off of New Zealand.

Scientists are attempting to figure out just how the fish's tag got in the stomach of the chick, known as a sooty shearwater. The two most prevalent theories about the tag include:

  • The shearwater ate the fish off the coast of Oregon, where the birds migrate every year, and then the tag got lodged in its stomach and made its way into the chick's mouth over a year later.
  • The fish was caught in a net by Japanese or Russian fishermen near Alaska, then was thrown overboard to become food for the flocks of birds that follow the fishing vessels looking for a bite.

Now, what's the point of this story? Apparenlty, scientists hope to use this case to shed light on the connection between ecosystems throughout the Pacific and the Northwest U.S., particularly that of salmon. It looks like they hit the jackpot with this bizarre bit of eco-evidence.

From News-Leader

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