  | 
           
            
           | 
           
            
           | 
         
       
      
       
      
        
      
       
      
        
          
            Moon 
            coral 
            Diploastrea heliopora* 
            Family 
Diploastreidae 
            updated 
            Nov 2019
             
            Where 
            seen? This beautiful neat coral is sometimes seen, usually on our undisturbed Southern shores. Diploastrea heliopora is the only member of this genus and the only genus in the Family 
            Diploastreidae. Favia laxa may appear similar. 
             
            Features: Colonies 15-30cm, elsewhere 
            recorded to grow up to 5m wide and 2m tall. The colonies are said 
            to be usually dome-shaped but may become almost spherical boulders. 
            Some seen were encrusting. The corallites (1cm) are similarly-sized 
            neat domes with a small central opening. Neat narrow ridges on the 
            corallite radiate out in regular rays. The corallites are regularly 
            spaced out for an overall pattern that is neat and tidy. The large 
            polyp tentacles are said to emerge at night. Colours seen include 
            brown, purplish, pinkish-brown sometimes with a bluish tinge. 
             
            Status and threats: This coral 
            is listed as globally Near Threatened by 
            the IUCN. Like other creatures of the intertidal zone, they are 
            affected by human activities such as reclamation and pollution. Trampling 
            by careless visitors, and over-collection also have an impact on local 
            populations. | 
           
        
       
      
        
            
            Pulau Jong, Jul 07 | 
           | 
           | 
         
       
      
         
           
              
Tentacles about to emerge? 
Kusu Island, Jun 15 
Photo shared by Marcus Ng on facebook. 
           | 
           
            
           | 
           
            
           | 
         
       
       
      *Species are difficult to positively identify without close examination. 
On this website, they are grouped by external features for convenience of 
      display.
       
      
        
          
            | Moon 
      corals on Singapore shores | 
           
        
       
      
       
      
        
          
            | Other sightings on Singapore shores | 
           
        
       
       
      
        
            
                 Sentosa Serapong, Jul 15 
              Photo shared by Loh Kok Sheng on flickr. | 
            
                 Sentosa Serapong, Jul 25 
              Photo shared by Tammy Lim on facebook. | 
           | 
         
       
       
      
        
            
                 St. John's Island, May 10 
                Photo shared by Loh Kok Sheng on his 
                blog. | 
            
                 St. John's Island, Apr 21 
          Photo shared by Loh Kok Sheng on facebook. | 
           | 
         
       
       
      
        
            
            Pulau Semakau West, Jul 25 
          Photo shared by Loh Kok Sheng on facebook. | 
           | 
            
            Pulau Semakau East, Jun 25 
            Photo shared by Loh Kok Sheng on facebook. | 
         
       
       
      
        
            
                 Beting Bemban Besar, May 22 
          Photo shared by Loh Kok Sheng on facebook. | 
            
                 Terumbu Pempang Tengah, Jul 12 
          Photo shared by Loh Kok Sheng on flickr. | 
           | 
         
       
       
      
        
            
             Pulau Semakau (North), Jul 20 
                
            Photo shared by Loh Kok Sheng on facebook. | 
            
                 Terumbu Semakau, Jun 10 
                  
Photo shared by Loh Kok Sheng on his 
          flickr.  | 
            
                Terumbu Salu, Jan 10 
            | 
         
       
       
      
         
          |  
             Links 
            
            References 
                
            
              - Danwei Huang, 
                Karenne P. P. Tun, L. M Chou and Peter A. Todd. 30 Dec 2009. An 
                inventory of zooxanthellate sclerectinian corals in Singapore 
                including 33 new records (pdf). Raffles Bulletin of Zoology 
                Supplement No. 22: 69-80.
 
              - Veron, Jen. 
                2000. Corals 
                of the World 
                Australian Institute of Marine Science, Australia. 3 volumes. 
                
 
              - Chou, L. 
                M., 1998. A 
                Guide to the Coral Reef Life of Singapore. Singapore Science 
                Centre. 128 pages.
 
              - Erhardt, 
                Harry and Daniel Knop. 2005. Corals: 
                Indo-Pacific Field Guide 
                IKAN-Unterwasserachiv, Frankfurt. 305 pp.
 
              - Borneman, 
                Eric H. 2001. Aquarium 
                Corals: Selection, Husbandry and Natural History 
                T.F. H Publications. 464 pp
 
             
           | 
         
       
       | 
      |