Candy nudibranch 
Carlsonhoff's Phyllidia 
Carminodoris estrelyado 
Cerastoma tenue 
Ceratosoma amoenum 
Ceratosoma gracillimum 
Cerberilla ambonensis 
Chromodoris alcalai 
Chromodoris colemani 
Chromodoris elisabethina 
Chromodoris hamiltoni 
Chromodoris joshi 
Chromodoris kalawakan 
Chromodoris magnifica 
Chromodoris strigata 
Coi's Goniobranchus 
Coleman's Melibe 
Collingwood's Goniobranchus 
Coryphellina arveloi 
Coryphellina flamma 
Coryphellina lotos 
Cratena affinis 
Cratena simba 
Cratena Slug