Diadema are long-spined sea urchins. They are important herbivores that graze on algae, that could overgrow the slow-growing corals on the reef. Their impact on the health of the reef is so great that several projects have focus on
Diadema are long-spined sea urchins. They are important herbivores that graze on algae, that could overgrow the slow-growing corals on the reef. Their impact on the health of the reef is so great that several projects have focus on
