A nurse shark
Media playback is unsupported on your device
Video

Scientists 'tag' Florida sharks to monitor behaviour

Scientists from the University of Miami are tagging three different species of shark so that they can get more information about their migration patterns.

The tags send a signal via satellite to scientists and provide information about their behaviour.

Sharks from the Florida keys are being targeted.

The BBC's Thomas Sparrow reports.

Go to next video: UK monitoring 'vulnerable sharks'