Pavona maldivensis (encrusting)
A variant of Pavona (cactus / potato chip coral) (Pavona cactus)

Photo: Zarinah Waheed, Francesca Benzoni, Sancia E. T. van der Meij, Tullia Isotta Terraneo, Bert W. Hoeksema · CC BY 4.0
A related species that encrusts and mounds rather than plating, often in orange, green or two-tone colours sold as 'Pavona maldivensis'.