In a glass or ceramic bowl, combine the peeled and deveined shrimp with the fresh lime juice and orange juice. Ensure that the shrimp are completely submerged in the citrus juices to effectively cook them in the acidity.
Cover the bowl tightly with plastic wrap and place it in the refrigerator. Allow the shrimp to marinate for about 30 to 45 minutes, or until they have transformed to a vibrant pink and opaque color, indicating they are fully cooked by the citric acid.
Once the shrimp are ready, carefully drain some of the excess citrus juice, retaining a small amount for flavor while making sure not to drown the shrimp in liquid.
Next, gently fold in the sea salt, black pepper, diced avocado, finely chopped red onion, minced jalapeño, chopped cilantro, and lime zest with the shrimp.
Gently toss all the ingredients together until they are thoroughly combined, ensuring an even distribution of flavors. Taste before serving and adjust the seasoning with additional salt if desired.
Serve the ceviche immediately on a generous bed of tortilla chips or in small glasses for elegant individual portions.
Notes
For an appealing presentation, garnish each serving with a handful of extra cilantro leaves and a couple of lime slices. Enjoy the dish chilled for a refreshing experience!