Have you ever heard the clacking of a clown fish? Or the drumming of a seahorse? How about a pistol fish shooting its prey? In celebration of the glorious underwater world of the reef, we’re taking you below the surface and into a world alive with snorting, honking, crackling and rasping.

The 2015 documentary Life on the Reef focused on Australia’s Great Barrier Reef, the wondrous creatures that live in it, and the urgent need for its protection. This fascinating section about the Reef’s sounds subverts traditional visions of underwater worlds as dreamily silent, illuminating the texture and complexity of communication within a marine ecosystem.