I also have a keen interest in the functional processes that are supposed to impart resilience to coral reefs. Herbivory is a key example. The new conventional wisdom is to recover herbivore (specifically parrotfish) populations to shift reefs from macroalgal-rich to coral-rich states, but is this emphasis on fish herbivores justified? We have just started a new study that aims to measure herbivory by fish and invertebrates, both by day and night, to understand who eats what and when, and get a clearer picture of the key players in the herbivory story.