Sexy crest!!! This is actually a Northern Rockhopper Penguin Eudyptes moseleyi, identified by their more elaborate crests and occurring on the Tristan da Cuhna archipelago (Atlantic) and Amsterdam Island (Indian O.).
The Northern Rockhopper Penguin, Eudyptes moseleyi, is a species of rockhopper penguin. The Rockhopper Penguin Eudyptes chrysocome was split into two species, Northern and Southern Rockhopper Penguin, after research showed differences between the two populations.