#スキューバ
Green Sea Turtles (”Honu” in Hawaiian) begin their lives as omnivores, but then transition to an all vegetarian diet as they enter adulthood. They eat mostly sea grasses and algae and it is said that herbivorous turtles like these tend to host fewer parasitic organisms such as barnacles living on their shells, as a result of their vegetarian diet. Judging by the beauty and cleanliness of this dude’s shell, I’d say that the theory has some merit - photo taken at Maarehaa Kandu, Indian Ocean
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The main difference between soft and hard corals is that hard corals produce and leave behind a rock-like skeleton as they grow, made of calcium carbonate - CaCO3 (the same substance that chalk and Tums is made out of).
It is these calcified skeletons that together make up the primary structure of a coral reef, which can eventually grow to the size of a mountain range. A good example is the Great Barrier Reef, which despite recent mass bleaching is still presently the largest living thing on Earth and is visible from space - photo taken at Foammulah Atoll, Indian Ocean
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Pyramid Butterflyfish schooling alongside the reef at Bunaken National Marine Park, Indonesia
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