Kahe Point, Oahu, 25 feet 

Uncommon on shallow reefs, it hides in sand-bottomed crevices during the day and actively hunts for fish or crustaceans at night.  Frequently seen swimming along the water's edge in search of Ghost Crabs.  Dark gray and white below by day and iridescent brown with broad bars at night, marginal fin edged with black.  Local names include white eel and tohei.  Attains nearly 5 feet.  Endemic to Hawai‘i.  Recently separated from Conger cinereus of the Indo-Pacific.