The Prince and the Coral Sea

On the island of Okinawa, driven by his kindhearted nature, a boy named Ray determines to stop the destruction of the island's natural forests and coral reef, no matter what he has to give. What will he give to stop a tidal wave from killing the island's people?

Official website :https://www.daisakuikeda.org/sub/events/archives/2009/dec/di_091211-animation-series.html