Why did your design = Because it prevents dangerous to coral reefs.
Why did tool = Prevention of coral reefs make perfection sea remains.
What can to do
1. It will unleash a wave disturbing creatures that will destroy the coral.
2. It can check and monitor the movements of coral in the sea.
How to use
Use of solar energy by recharging with solar cells (Charging 1 hour can be used for 2 days).
When a low battery, it will float up to the surface to recharge