1. To prepare marinade, combine Florida Orange Juice, lemon juice, lime juice, red onion, jalapeño, 2 tablespoons cilantro, ginger and jalapeño sauce in a mixing bowl. Remove and reserve ¼ cup of marinade.
2. Add rock shrimp and cover and refrigerate for 3 to 4 hours, until shrimp is firm and no longer transparent.
3. Remove shrimp from marinade and discard marinade. Place shrimp in a clean mixing bowl and add ¼ cup reserved marinade, avocado, Florida Grapefruit segments, cucumber, celery, 2 tablespoons cilantro and olive oil. Toss gently to combine.
4. Season with salt and pepper. Serve ceviche in chilled martini glasses.