This document presents environmental data collected in August 2013 consisting of coral tissue (Pocillopora damicornis) contaminants and surface water nutrients offshore from Tinian in the Commonwealth of Northern Mariana Islands (CNMI). The study area is in and around the Tinian Marine Reserve on the southwest corner of the island. Despite being a marine protected area, there is very little information on pollution stressors to this protected ecosystem. These new data provide a survey of the system, including the magnitude and spatial extent of pollution in coral tissues. These data also provide an important starting point against which to measure future change.