Mesophotic coral ecosystems (MCEs, occurring at depth from 30-40 m to over 150 m) play an important role as refugia for shallow reef corals under the global warming, known as “The Deep Reef Refugia Hypothesis (DRRH)”. We found evidence supporting this hypothesis with a dense population of Seriatopora hystrix, a coral which had disappeared from shallow reefs in the area. However, beyond the role as refuge, the DRRH stipulates that MCEs should also serve as source of larvae for further recolonisation of shallow reefs. Unfortunately knowledge on ecology of scleractinian corals living in MCEs is largely missing, especially regarding the vertical connectivity and potential to recolonize shallow reef. In the present study, we examined whether mesophotic coral juveniles can survive and adapt to shallow environment or not by field and laboratory experiments and discuss a potential recovery of shallow reefs.