The razor clam has a long narrow shell, somewhat resembling an old-fashioned straight razor. The shells also have a sharp edge. The clam is hunted for food in exposed mudflats along the ocean shoreline. Its defense against people and predators is an impressive ability to burrow underground rapidly. They can dig downward at about one centimeter per second to a depth of 70 centimeters, or about 28 inches.
anchoring vessels, seafloor monitoring equipment, and underwater cables
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A researcher at Caltech is developing new ways to power submarines and windmills using the lowly jellyfish. Jellyfish have a unique method of swimming through ocean water. Rather than using fins and flippers, they “pump” their body to produce ring-shaped pulses of water called vortex rings. These vortex rings are spinning, donut-shaped masses of water that the jellyfish uses as a launch pad to propel itself forward through the water. This type of swimming is much more efficient than pushing water backward in a single stream.
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Many sea creatures including dolphins, porpoises, and whales have a tail structure that results in impressive bursts of speed. Their tail fin, called a fluke, is waved back and forth to provide forward motion. Meanwhile, the pectoral and dorsal fins provide directional stability. Dolphins reach speeds of 30-40 miles/hour (48-64 km/hr) and can leap completely out of water. Similarly, massive whales are able to breach or break from the water surface as they churn their tails.
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Thousands of wind turbines have been installed worldwide in recent years for the production of clean electric energy. Efforts continue to make the large turbines efficient and quiet. One successful modification of existing turbine blades is inspired by the stegosaur.
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Computers have come a long way but they still primitive compared with our own brainpower. Our brains can handle much more information and processing than any supercomputer yet developed. The brain is so far superior to current computers that scientists seek ways to mimic its “wiring” in modern computers.
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German engineers have applied the tooth sharpening ability of rodents to cutting tools.
Beavers, rats, rabbits and similar rodents depend on their teeth for survival. They are experts at gnawing, and their teeth are designed with a self-sharpening ability. Unlike our own, rodent teeth are covered with enamel on only the front side. Softer dentine is exposed on the back of the front teeth. As the rodent chews and wears down its teeth, it alternates grinding its lower incisors against either the front or the back of the upper incisors. As a result, the hard enamel slowly wears down the softer dentine and the teeth remain sharp. The teeth also continue to grow from the root, maintaining their length. The animals must continue to gnaw or their teeth will outgrow their mouth.
self shaping tools
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Continental has at the Commercial Vehicle IAA his future version of the tire presents: Sustainable, and especially less dependent on price fluctuations than the usual natural rubber, is the tire manufacturer on the commodity dandelion. On Tuesday the first test tire rubber from dandelions was presented.
substitute rubber products
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Festo has been working intensively on the topic of bionics since the early 90s. In 2006, the Bionic Learning Network was launched – an association of renowned universities, institutes and development companies. Since this time, Festo has been developing and supporting projects and test objects whose basic technical principles are derived from a wide variety of principles found in nature.
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With the eMotionSpheres, Festo shows how several flying objects can move in a coordinated manner and within a defined space. Whether individually or collectively – even in chaotic situations, there are no collisions as the spheres move out of each other’s way.
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Wind turbines are the Colossus of the modern landscape, their blades sweeping circles more than a football field in diameter. Critics call them unsightly and say that the rotating blades clobber unsuspecting birds.
John Dabiri of Caltech found a solution underwater. He built an experimental wind farm — the Caltech Field Laboratory for Optimized Wind Energy (FLOWE) — in which the location of turbines relative to each other takes advantage of the air flow among them.
Continue reading shoals of fish will offer their secret for windfarms →