Habitat: Common in reef habitat with wave or current action, usually below 10 m in depth. Distribution: Caribbean wide. Characteristics: Massive, roundish, occasionally lobate (up to 30 cm wide). A. dispar has been reported in two distinct color forms: bright orange, and reddish to walnut-brown externally, lighter orange or tan internally. The surface is smooth. There are three intergrading kinds of oscules: (1) meandering invaginations, 1-3 mm wide, up to 5 cm long, (2) circular oscules, 2-7 mm in diameter, (3) smaller, circular to elongate, 1-2 mm wide, flush.