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Fish

If you happen to be frolicking around in some tropical waters at some point in the future, you may have the marine life circling your feet to thank for keeping your shoulders from roasting. Scientists have uncovered a technique used by zebrafish and various other animals to create their own sunscreen and recreated it in the lab. They say the method could one day be used to produce sunscreen and other pharmaceuticals for humans.

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We frequently hear that eating fish is a healthy thing to do, because it's full of beneficial long chain fatty acids. Unfortunately, the Western diet tends to be short on fish and bigger on beef, which contains short chain fatty acids that aren't quite so good for us. Chinese scientists are creating a work-around, however – genetically-engineered beef that's high in the "good" fatty acids.

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Mussels have an incredible ability to cling to wet surfaces. It's an ability that scientists are trying to replicate for use in man-made adhesives. That adhesion can't be turned on and off as needed, however, limiting its potential applications. That's where the Northern clingfish comes in. It can suck onto rough, slimy surfaces, supporting up to 150 times its own body weight when lifted. That said, it can also just let go and swim away whenever it wants. Scientists from the University of Washington now understand how it's able to do so, and are looking at applying the principle to fields such as surgery and whale-tracking.

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Owning an aquarium can be quite enjoyable, but it comes with plenty of headaches. There's a lot of maintenance that's a part of owning one – maintenance that Aqua Design Innovations aims to get rid of with the introduction of its EcoQube C fish tank. Read More
On most fish, their hard, overlapping scales provide considerable protection against pokes and cuts. Because those independently-moving scales are each attached to a flexible underlying skin, however, the fish are still able to easily twist and turn their bodies. Scientists from the Technion-Israel Institute of Technology and MIT are now attempting to copy that structure, to develop flexible-yet-effective armor for humans. Read More
According to a study conducted by international non-profit group Oceana, approximately 30 percent of seafood sold in the US is fraudulently mislabeled. That's why scientists at the University of South Florida have created a handheld sensor that can determine if what's being offered is in fact the real thing. Read More
In order to study how young fish such as salmon are affected by swimming through hydroelectric dams, scientists have traditionally equipped them with surgically-implanted acoustic tracking tags. Unfortunately, the implantation procedure can harm the fish, plus the weight of the device can affect their behavior. Now, however, a team at the Pacific Northwest National Laboratory (PNNL) in Washington state has developed a much lighter acoustic tag, that can be injected into fish using a needle. Read More
Tagging fish offers scientists new ways of learning about their movements, growth and methods of survival. While this helps in conservation efforts, new research suggests it may in fact be having an adverse effect, with the sounds emitted by the tags alerting predators to the fish's location and where to hunt for their next meal. Read More
It’s a tough row to hoe for young salmon in the Pacific Northwest as they make their perilous journey from upriver to the ocean. Besides hungry birds and sea lions, the regions many hydroelectric dams and their swirling turbines produce manmade currents and other obstacles that make it challenging for the fish to navigate. But now with the help of an artificial Senor Fish created by the Pacific Northwest National Laboratory (PNNL), existing larger dams and newer, smaller hydroelectric facilities can become more fish-friendly. Read More
If you live in an area where salmon spawn, then summer treats you to a free nature drama as the fish battle against currents, fight through rapids, struggle up tiny streams, and leap up waterfalls to return to the calm pools where they were born. Unfortunately, however intrepid the odd salmon is, they weren't built to take on a 300-ft tall hydroelectric dam. That's why Whooshh Innovations has developed a system that sucks the fish up through a plastic tube and shoots them over obstacles low and tall like so many piscatorial projectiles. Read More
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