Fennel and Orange Salad

Peel oranges with a sharp knife and remove all white skins. Cut oranges into quarters lengthwise and then cut crosswise into slices. Reserve any resulting orange juice. 

Rinse fennel, trim, cut in half lengthwise, remove stalk and cut fennel into small cubes. Set fennel leaves aside. Peel onion and cut into rings. Mix orange pieces in a bowl with fennel cubes and onion rings.