Rough leather coral 
Sagartiogeton undatus 
Sargasso Anemone 
Scytalium tentaculatum 
Sea ginger 
Sea Mat Zoanthid 
Sebae anemone 
Shoulderblade Coral 
Smooth flower coral 
Snakelocks anemone 
Soft Coral Variable Chironephthya 
South Pacific Mauve Stinger 
Spaghetti finger leather coral 
Speckled Rock Anemone 
spinnaker anemone 
Spiral Wire Coral 
Spotted jelly 
staghorn coral 
Starburst anemone 
Stephanogorgia diomedea 
Stichodactyla haddoni 
Stinging Bush Hydroid 
Stinging Hydroid 
Sulphur leather coral