The capacity of coral reefs to provide ecosystem services is widely recognized, but this ability depends on continued carbonate production within the coral community.The Islas Marías archipelago (21° 29.5′ N-106° 15′ W) is subject to minimal anthropic pressures. This archipelago serves as a model to study the influence of environmental variables [e.g., sea surface temperature (SST), upwelling periods, El Niño-Southern Oscillation (ENSO) events, and pH] on the structure of the coral community. The aim of this study was to evaluate the growth parameters, ecological volume, and CaCO 3 production of Pocillopora corals, which comprise the dominant genus in the Eastern Tropical Pacific (ETP). During an annual period (2016-2017), 10 colonies were stained with alizarin red and height, major diameter, and minor diameter measurements were recorded. Live coral cover, the annual extension rate (cm/year), skeletal density (g/ cm 3 ), the calcification rate (g/cm 2 year −1 ), ecological volume (cm −3 ), and carbonate production (kg m −2 year −1 ) were also calculated. The average extension rate (± SD), skeletal density, and the calcification rate were 1.86 ± 0.31 cm/year, 2.28 ± 0.34 g CaCO 3 cm −3 , and 4.34 ± 1.28 g CaCO 3 cm −2 year −1 , respectively. The average live coral coverage was 3.19 ± 3.17%, and the relative cover of Pocillopora corals was 65%.Ecological volume increased 140.6 ± 84.28% with respect to the initial volume, and the average production of CaCO 3 was 0.46 ± 0.41 kg CaCO 3 m −2 year −1 . This study shows evidence of low growth rates, low generation of three-dimensionality, and low CaCO 3 production in the study area when compared to other sites in the ETP. These results are relevant because they indicate compromised long-term maintenance and reef development in Islas Marías, which may result in low reef functionality and compromise the stability of reef-associated biodiversity and ecosystem services.