Habitat: Subtidal in crevices of coral rubble; uncommon. Distribution: Bahamas, Belize, and the Yucutan coast of Mexico. Natural History Notes: One of the few Phascolion species that does not inhabit shells of gastropods, scaphopods or foraminiferans Characteristics: With retracted introvert, specimens are almost spherical. Trunk up to 30 mm long, covered with abundant and prominent papillae. Introvert up to 3X as long as trunk. Distal end of introvert forms bulbous expansion, bearing scattered hooks and 9-24 tentacles.