RM
Invasive seaweed control
Invasive seaweed control. Diver manually removing the green alga Caulerpa taxifolia from the seabed during efforts to control its spread. The alga is native to the Caribbean, but a strain capable of growing in cooler climates was introduced to the Mediterranean in the 1980s, probably from an aquarium. Dense Caulerpa meadows cover large regions. It is tough, fast-growing and toxic to the main herbivores in the region. It is replacing native species and causing major ecological damage. Photographed in the French Mediterranean.
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