Sega Marine Fishing Sega Dreamcast cheats

Hideaway of Big Fish stage
Successfully complete arcade mode once to unlock the Hideaway of Big Fish stage in original mode under the free fishing option.

Fishing Port stage
Successfully complete arcade mode twice to unlock the Fishing Port stage in original mode under the free fishing option.

Dogtooth Tunas
Successfully complete arcade mode three times to make the Dogtooth Tunas cacheable in the Fishing Port stage.

Napoleon Fish
Successfully complete arcade mode four times to make the Napoleon Fish cacheable in the Corel Reef.