Though not quite as streamlined as the dolphin of the same name (Flipper..), Japanese brand Suicoke flipped (awful, I know) the classic Clarks Wally into something a little more pared down. Real rough suede with a leather lip and rubber sole. Comes with a shoe bag. Available from Dedue Select. (Japan. Proxy. Yadda-yadda.)
More looks at the Suicoke Flipper Boot follow.