Old-fashioned and full of nostalgia, the renowned Tsukiji fish market is at its busiest before dawn.

Hand-written signs by small-fish wholesalers are lit with white lamps in the otherwise dark corridors of the market as workers prepare for the morning's main event: the tuna auction.

Hundreds of massive tuna are laid out on the floor as wholesale buyers size up the most prized catches ahead of the auction's 5:30 a.m. start time.