UK researchers have developed a prototype of a future giant rubber tube which could catch energy from sea waves. The device, dubbed Anaconda, uses ‘long sea waves to excite bulge waves which travel along the wall of a submersed rubber tube. These are then converted into flows of water passing through a turbine to generate electricity.’ So far, the experiments have been done with tubes with diameters of 0.25 and 0.5 meters. But if the experiments are successful, future full-scale Anaconda devices would be 200 meters long and 7 meters in diameter, and deployed in water depths of between 40 and 100 meters. An Anaconda would deliver an output power of 1MW (enough to power 2,000 houses). These devices would be deployed in groups of 20 or even more providing cheap electricity without harming our environment. But read more…

You can see above how the Anaconda captures wave power. (Credit: unknown; diagram found on this page at This is London, July 2, 2008) “Because it is made of rubber, the Anaconda is much lighter than other wave energy devices (which are primarily made of metal) and dispenses with the need for hydraulic rams, hinges and articulated joints. This reduces capital and maintenance costs and scope for breakdowns.”

The Anaconda was invented by Francis Farley, an experimental physicist, and Rod Rainey, of Atkins Oil and Gas. You’ll find more details on their web site. For example, several technical papers are available from this page.
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