Santa Claus Cantaloupe / Melon Seeds (Aimers International) Heirloom Vegetable. Variety originated in Spain. Named for its long keeping quality, fruit resembles a watermelon at 30 cm (12”) in length by 15 cm (6”) across. Fruit attaining a mature weight of 3 kg (6.8 lb) is not uncommon. Sweet tasting flesh is light green in colour.