Lobactis scutaria 
Lobed Cactus Coral 
Lobophyllia serrata 
Long-tentacle Plate Coral 
Madrepora Carnation 
Magnificent Sea Anemone 
Massive starlet coral 
Mauve Stinger 
Maze coral 
Melithaea maldivensis 
Mertens' carpet sea anemone 
Merulina ampliata 
Merulina scabricula 
Micromussa amakusensis 
Milk Leather Coral 
Millepora tenera 
Montipora carinata 
Montipora digitata 
Moon Jelly 
Mountainous star coral 
Mushroom Coral 
Mustard Hill Coral 
Nausithoe racemosa 
Nemanthus nitidus