Organic Light Emitting Diode. Each pixel in the screen is a separate LED, meaning it needs no backlight (therefore lower power) and is (allegedly -- I haven't yet seen an OLED display yet) crisper and contrastyier (to coin a word). OLEDs also operate at lower temperatures than standard liquid crystal displays, so you can watch it in your freezer or a North Dakota winter.
Plus the back lighting is suppose to be more even.
Sea creatures?