意大利面几何学。
(via blackklungs)
意大利面几何学。
(via blackklungs)
Discovered on TumTum ♻Parrotfish, Great Barrier Reef
Photograph by David Doubilet, National Geographic
The clownish grin of a bridled parrotfish reveals its power tools: grinding teeth used to scrape algae from rock. Though sometimes destructive to individual corals, the fish’s efforts are mostly beneficial. Without them, algal growth could smother the reef. Scarus frenatus