Trapania tamaraw 
Trapania vitta 
Trinchesia acinosa 
Tritoniopsis elegans 
Tropical Gasflame 
Tuberculous nudibranch 
Tyrannodoris luteolineata 
Tyrannodoris nikolasi 
Unidentia sandramillenae 
Variable neon slug 
Varicose Wart Slug 
Verconia alboannulata 
White-and-orange-tipped Nudibranch 
White-margin sea slug 
Willan's Chromodoris 
Willey's Halgerda 
Yamasu's Cuthona