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Flashy clam is disco king of the ocean

Thursday, January 31, 2013 - 02:06

Jan. 31 - Researchers at Berkeley University are trying to understand how a little-known species of clam reflects light so efficiently. The scientists say that unlocking the flashy secrets of the so-called 'disco clam' could lead to new reflective technologies. Ben Gruber reports.

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For reasons that may be obvious, the mysterious Ctenoides Ales, has become better known as the 'Disco Clam'. Researcher Linsdey Dougherty fondly recalls the first time she saw one. (SOUNDBITE) (English) LINDSEY DOUGHERTY, RESEARCHER, BERKELEY UNIVERSITY, SAYING: "I was just blown away. I have dived with great whites, I have dived with humpback whales, I've dived with whale sharks. And with the disco clam, I was just immediately enamoured." It began, like so many love affairs, with the lips. The disco clam has the brightest smile in the ocean, with lips that flash like a strobe light. Dougherty says many people confuse the clam's flashy light show with bioluminescence which produces light through a chemical reaction. She says the clam's shiny lips represent one of Nature's best examples of the ability to reflect light. (SOUNDBITE) (English) LINDSEY DOUGHERTY, RESEARCHER, BERKELEY UNIVERSITY, SAYING: "What I found when I looked at their tissue is that their tissue is basically half filled with these small particles that reflect light very well and half of the tissue is empty. It is literally a dividing line down the tissue. And when you look at high speed video of what is happening, you can see the reflective part of the video unrolling and the light reflects and then the non-reflective side rolls back up. And you do high-speed video you can see that this is happening five or six times a second which makes it look like it is literally flashing." This reflective ability is so highly adapted, that the clam can produce its display deep underwater, where very little light penetrates. And while the disco clam puts on a great show, Dougherty says studying it could plays an important role in the field of photonics - understanding how light interacts with matter. (SOUNDBITE) (English) LINDSEY DOUGHERTY, RESEARCHER, BERKELEY UNIVERSITY, SAYING: "So by learning about these natural structures and how they function, we can improve technology and have things better interact with light. So everything from paints to flat screen TV's to anti-counterfeiting devices. There is really a plethora of cool ways that these organisms can be applied to technology." Dougherty says she is also trying to figure out why the clam puts on a show. She says it could be to attract prey or frighten off predators. Or, she says, it could be that the disco clam is simply looking for a mate to boogie with.

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Flashy clam is disco king of the ocean

Thursday, January 31, 2013 - 02:06

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