Sampling sites and symbiotic model organisms.

(a) Shallow subtidal at one of the study sites, FLKReef3, Long Key Reef track, Florida Keys, Florida, USA. (b) Solitary individual of the Atlantic winged oyster Pteria colymbus attached to a host colony of Pseudopterogorgia sp. (c) A male of Pontonia manningi (scale bar = 1.6 mm). Photo credits: J. Antonio Baeza