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David Attenborough's Great Barrier Reef:

This Crab Doesn't Take Kindly to Home Intruders

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This Crab Doesn't Take Kindly to Home Intruders

Short | 01:21

The crown-of-thorns starfish eats coral reefs; coral reefs happen to be the home of the guard crab. This puts these two tenacious aquatic creatures on a direct collision course.

More About This episode

Within the last few decades, the residents of the Great Barrier Reef have seen their habitat decline rapidly. Almost half the coral has disappeared, and at the current rate, we risk losing the reef altogether. But revolutionary technology has made it possible for scientists to make new discoveries that may hold clues to its survival. Join host Sir David Attenborough and teams of researchers and scientists as they use cutting edge techniques to help overcome some of the serious challenges that lie ahead.

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