Saltwater
Button polyp
Palythoa tuberculosa
Sphenopidae
Palythoa tuberculosa
Sphenopidae
Seen in the wild in Australia, Ecuador, Egypt, Fiji, French Polynesia, Guam, India, Indonesia, and 20 more countries.
Palythoa tuberculosa, also known as the pillow zoanthid, or rubbery zoanthid, is a species of cnidarian in the family Sphenopidae. This species is commonly found in shallow tropical waters of the Indo-Pacific region, including Hawai'i, where it plays a role in reef ecosystems by forming encrusting colonies on rocky surfaces.