Twilight Zone Reefs in the Chagos Islands
The part of the ocean that is home to mesophotic coral habitats is known as the Twilight Zone. This zone also contains coral reefs that vary in depth; they can be 30m to 150m deep and can be easily identified by the ecosystem’s light dependence.
The creatures there have little choice but to adapt to low light levels in the region; the entire region is quite remote, and as a result, dives were limited to 25m below the surface. Creatures find refuge there, with corals that have distinctive shapes.
