How and why do predators use mesophotic reefs?

Mesophotic coral reefs generally occur from depths of 50-150 m. We used a combination of telemetry, stable isotopes and technical diving to understand how and why predators (Galapagos sharks and giant trevally) uses these deeper reefs. Our results were just published in Marine Ecology Progress Series

http://www.int-res.com/abstracts/meps/v521/p155-170/