Hermit crabs are important ecosystem engineers (Jones et al., 1994) in marine habitats, from the intertidal to the deep sea. The symbiotic associates of hermit crabs were reviewed worldwide by Williams & McDermott (2004), and over 550 invertebrates, from 16 phyla, were found associated with over 180 species of hermit crabs. Many studies have been focused on hermit crab-actiniarian associations, while hermit crab-zoantharian symbioses have received less attention (Kise et al., 2019).