A premium watermelon from northern Japan has fetched 600,000 yen, or about 4,500 dollars, in the season's first auction.
The fruit is among 113 Densuke brand watermelons auctioned on Monday.
Densuke, a specialty of Toma Town, Hokkaido, features black skin and a sweet taste.
Harvesting of Densuke will continue till mid-August. Farmers say shipments will peak in mid-July, as the fruit is a popular summer gift.