📄 Text Insert: Non-Fiction
1The Silent Symphony of Coral Reefs
2
3Beneath the surface of tropical oceans lies a world pulsating with life—a
4kaleidoscope of colour, movement, and unexpected sound. Coral reefs, often
5described as the rainforests of the sea, are far more than silent underwater
6gardens; they are bustling cities teeming with activity.
7
8The reef awakens at dawn. As the first rays of sunlight pierce the water, fish
9emerge from their nocturnal hiding places: parrotfish begin their daily ritual of
10grazing on algae, their powerful beaks scraping against the coral like a
11carpenter's rasp. This activity, though destructive in appearance, is vital. The
12parrotfish consume algae that would otherwise smother the coral, preventing
13photosynthesis and ultimately causing death.
14
15Scientists studying these ecosystems have made remarkable discoveries. Using
16sensitive hydrophones—underwater microphones—they recorded an
17astonishing cacophony of sounds. Snapping shrimp produce loud cracks by
18rapidly closing their claws; fish grunt, chirp, and whistle to communicate with
19each other. The reef, researchers concluded, is anything but silent.
20
21However, this vibrant ecosystem faces an existential threat. Rising ocean
22temperatures trigger coral bleaching—a phenomenon where stressed corals
23expel the symbiotic algae living within their tissues. Without these algae, corals
24lose their vivid colours and, more critically, their primary food source. If
25temperatures remain elevated for extended periods, the bleached corals
26perish, transforming once-thriving reefs into ghostly underwater graveyards.