The queen conch is a valuable and easy to harvest denizen of Caribbean benthic marine ecosystems, leading to population declines in many locations. In response, fishery regulations have been instituted in some nations, often designed to temper harvest by ensuring that only mature adults are harvested. Conch aggregate in shallow water sites during the reproductive season and shell lip thickness is a relative indicator of age (Appeldoorn 1988, Stoner et al. 2012a). Predictable shell growth and aggregation patterns facilitate the assessment of population density, size, and age structure in tandem over large areas.