The trampoline (1) has a holder (5) and a braced web (6) therein, the holder being secured to a float body (2) via a support frame (7). The float body is preferably formed such that at least in the jump region it protrudes with its outer edge no further than the outer edge of the trampoline. The apparatus can thus be used without danger as a diving platform with or without a trampoline effect.
