Place 12 shrimp in a small bowl. Chop the remaining shrimp and place with the clams in a large bowl. Cover and refrigerate for 1 hour. Meanwhile, combine tomato juice, oil, lemon juice, onion, hot sauce, Worcestershire sauce, garlic, chipotle, and adobo with salt and pepper in a blender until smooth; cool.
Divide the seafood mixture into bowls or glasses, sprinkle with cilantro, pour over the sauce. Decorate the edges of the dish with the remaining shrimps.