This aerial picture taken on March 26, 2025 shows Sea Forest’s headquarters in Triabunna, Tasmania. It is barely visible, and needs no irrigation or fertilisers: lying off the coast of Australia is a vast seaweed crop destined to curb livestock’s climate-altering flatulence and belches. (Photo by Gregory PLESSE / AFP) / TO GO WITH AFP STORY AUSTRALIA-AQUACULTURE-LIVESTOCK-CLIMATE, FOCUS BY GRÉGORY PLESSE