Branching Hammer coral 
Briareum stechei 
Briareum violaceum 
Broccoli coral 
Brown Hydra 
Bubble Coral 
Bubble-tip anemone 
Buried Sea Anemone 
Burrowing Sea Anemone 
Cabbage Leather Coral 
Cabo Verde Cup Coral 
Caementabunda simplex 
Calliactis polypus 
Cannonball jellyfish 
Cassiopeia xamachana 
Cauliflower Coral 
Cauliflower Jelly 
Cauliflower Soft Coral 
Chalice Coral 
Cherry Blossom Coral 
Chinese Lettuce Coral 
Christmas Anemone 
Christmas Tree Hydroid 
Cigar jellyfish