Robotic Fish
This RoboFish [link] is the one of the main attraction in London. It was introduced in London Aquarium. The scientist take 3 years to develop this kind of fish! Sometimes it make me confuse and think it's a real fish. It's because the way this fish swim is look like a life-like.
(watch Robotic Fish -QT)
Here are some spec of that fish
The fish are about 50cm long, 15cm high and 12cm wide (20in by 6in by 5in), and covered with bright scales that reflect light.
The maximum swim speed is about 50cm (20in) per second but the fish have been slowed down to less than half that, to help prolong battery life - up to five hours.
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