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it uses energy
it has an impact by farting from the clowds :)
Tidal energy is only useful where the water runs strongly, for example, a river mouth that has a narrow outlet to the sea, or a large bay with a small outlet. Where the water runs strongly, a turbine can be placed to generate electricity.The cost, the locations, the environmental impacts on marine life, and the limited technology is what is not causing the widespread use of Tidal energy. Either all or most of these things contribute to why some places can't either afford, or can deal with all of the impacts that could occur with this energy type.
Burning Coal
Environmental groups do not necessarily oppose use of tidal energy, but in some cases they oppose the location that is proposed to make use of the energy. The opposition is usually based on negative effects it would have on wildlife and the environment.
disruption of aquatic life in the area.
large consumption of land surface area.
gipang-atay maning way polos nga site.
The environmental impacts are erosion, loss of top soil and the loss of vegetation.
tidal energy is created by turbines that does make tidal power
Tidal energy exists whether anyone uses it or not. Asking whether it can harm sea life is rather pointless, as it has existed for at least hundreds of millions of years; sea life that can't deal with it died out long ago. If you're asking if power plants based on tidal energy could hurt sea life... sure, it's possible. They can be designed to have as little impact as possible, but nothing is ever 100% safe. However, it's a tradeoff: the impact of tidal plants would almost certainly be less than, say, the British Petroleum oil well explosion in the Gulf of Mexico in 2010.
tidal energy is be placed in the sea