Ecco 2: The Tides of Time Cheats (Genesis)

At beging of the level there should be 2 rocks.  Face up toward them and press B (they
will break).  Swim through and you will be in the first level.

  Turn so that ecco is looking at you.  While he is looking at press start and quickly
press A, B, C, B, C, A, C, A, C, A, B.