Boil a large pot of water, add the shrimp and cook until just opaque, about 4 minutes.
Remove and transfer to an ice bath to prevent further cooking.
In a large bowl combine the onions, garlic, tomatoes, cilantro, salt, pepper, vinegar, olive oil jalapeno, clam juice, cumin, and honey; mix to combine.
Add the shrimp and refrigerate for at least 2 hours or as long as overnight.
To serve cut the avocados in half, remove the pit and skin.
Divide arugula in 4 dishes, top each with 1/2 avocado and top with ceviche (about 1/2 cup-7 shrimp each).