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  Robo-shark moves in with real fish
Updated 21 July 2003, 09.40
The roboshark swims quite happily with other sharks
The world's only robotic shark has moved in with some real, live fish.

Roboshark 2, as it's called, will live with four real sharks at the National Marine Aquarium in Plymouth.

The two-metre-long robot is modelled on a Pacific Grey reef shark and it swims using a combination of sensors and its "electronic brain".

Hidden camera

Fact File
Roboshark
Swims at up to 4.8kms/hour (3m/hour)
Swims up to 30 metres deep
Weighs 35kg
Can swim in all directions
Can swim for 4 hours before it needs recharging

Roboshark 2 is a copy of Roboshark 1 - which was built for a BBC TV series called Smart Sharks.

The first fish contained a hidden camera and was used to film sharks in their natural habitats.

Now Roboshark 2 will live in the aquarium for up to three years, so visitors can watch it and see how the other sharks react to it.

If necessary, its inventor, Andrew Sneath, can control Roboshark 2 from the surface to change what his robot's doing.

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