The oranges with small seeds are mandarins.
Mandarins, often called mandarin oranges, are a variety of tangerine known for their small size, sweetness, and generally easy-to-peel skin. While they aren't completely seedless, they typically contain a relatively small number of seeds compared to some other orange varieties. This slight presence of seeds can sometimes make them a less preferred choice compared to completely seedless options like clementines for quick snacking. However, their distinct flavor and convenient size make them a popular citrus fruit.