Dinosaur Egg
A variant of Montipora coral (Montipora sp.)

Photo: Holobionics · CC BY-SA 4.0
Representative Montipora coral image. A confirmed image of this exact morph isn't available yet.
A massive encrusting Montipora in bright blue-purple, with green along raised ridges. The ridges between corallites give it a patterned, eggshell look.
Other SPS Corals variants
Montipora capricornis (plating cap)Montipora digitata (branching)Sunset MontiporaForest Fire DigitataSuperman MontiporaRainbow MontiporaPumping / Sunburst SetosaIdaho Grape MontiporaJedi Mind Trick MontiporaSunkist Bonsai MontiporaGerman Blue Polyp DigitataPokerstar MontiporaWWC Sunset MontiporaWWC Mystic Sunset MontiporaReverse Superman MontiporaORA German Blue Polyp DigitataJF Fruity Pebbles MontiporaJF Aquaman MontiporaJF Beach Bum MontiporaJF Fire Starter Montipora (Hirsuta)Tyree Orange Setosa MontiporaORAnge Setosa MontiporaWWC Sunfire Grafted Cap MontiporaWWC Jedi Mind Trick MontiporaTSA Tequila Sunrise Grafted Setosa MontiporaLeng Sy CapGreen Branching CapKung PaoBubblegum DigitataMind MeldFruit Swirl SetosaIron Man GraftedContraband DigitataPlatinum HaloHawaiian PunchFlower Polyp CapPink Polyp CapBlue Polyp CapSunburst CapSupernatural CapPurple UndataSpongodesElkhorn Montipora