The increased water depth due to coral loss and reef erosion, as well as reduced structural complexity, will limit wave attenuation and exacerbate the risk of flooding from SLR on reef- Table 3.3 | Summary of previous IPCC assessments of coral reefs Observations Projections AR5 (Hoegh-Guldberg et al., 2014; Wong et al., 2014) Coral reefs are one of the most vulnerable marine ecosystems