Acknowledgements
We would like to thank the staff of the university of the Virgin Islands CMES and the Isla Magueyes Laboratories (university of Puerto Rico). We also thank Elizabeth Brill, Courtney Coppola, Ana Poças, Teresa Santos, and Alexandra Hook for their assistance with sample collection, as well as the anonymous reviewers for their valuable comments. This work was funded by grants from the US National Science Foundation (NSF OCE 1536794) and the Association of Marine Laboratories of the Caribbean (student grants-in-aid). This is contribution number ### from the University of the Virgin Islands Center for Marine and Environmental Studies.