The fast-growing invasive seaweed choking New Zealand's coastline

The country is grappling with the rapidly spreading Caulerpa seaweed as it marches along parts of New Zealand's coast.Caulerpa, a virulent exotic seaweed that forms dense mono-cultural mats across the seafloor, is marching along parts of New Zealand's coast, prompting fears it could become the worst ever threat of an invasive species to the local marine environment.Caulerpa can grow up to 3cm a day, in warm, clear, shallow waters, creating a green carpet across the seafloor and enveloping everything in its path. It competes with native seaweeds and sea grasses, smothers shellfish and can shrink the diversity of marine life. Continue reading...