For the Papaya and Watermelon soup, place papaya, watermelon, coconut water, lime juice, jalapeño, sea salt and 1/2 teaspoon of the coriander in blender container; cover. Blend until smooth. Refrigerate until ready to serve.
For the Lemon Coriander Cream, mix crème fraîche, lemon juice, sugar and remaining 1/2 teaspoon coriander in small bowl. Refrigerate until ready to serve.
To serve soup, ladle into serving bowls. Drizzle each serving with a heaping tablespoon of Lemon Coriander Cream. Serve immediately.