Heavy bonnet 
Helicarion perfragilis 
Helicarion permolle 
Helix aspersa 
Helix lucorum 
Hemibulimus dennisoni 
Hemiplecta cymatium 
Hemiplecta distincta 
Hemiplecta malaouyi 
Hermann Bornella Nudibranch 
Heron Ardeadoris 
Hoplodoris estrelyado 
Horn Shell 
Horned helmet 
Hydromyles globulosus 
Hypselodoris apolegma 
Hypselodoris bennetti 
Hypselodoris bullockii 
Hypselodoris cerisae 
Hypselodoris iacula 
Hypselodoris iba 
Hypselodoris infucata 
Hypselodoris krakatoa 
Hypselodoris lacuna