Fill a large pot with the water and wine and bring to a boil. Add the salt to the water and stir.
Prepare an ice bath. Fill a large bowl with lots of ice and cold water.
Add the squid to the water and cook for 1-2 minutes; until opaque and firm. With a slotted spoon, transfer the squid to the ice bath. Next add the shrimp and cook for 2-3 minutes or until the shrimp are opaque and the tails have curled. Transfer the shrimp to the ice bath. Add the mussels to the pot and cook until they have opened and are firm; 4-5 minutes. Transfer the mussels to the ice bath and discard any that did not open.
Drain the seafood well and remove the mussels from their shells. Add the seafood, celery, pickled peppers, and smashed garlic to a large bowl.
Make the dressing. Add the olive oil, herbs, and lemon zest to a blender and blend until smooth. Next add the lemon juice and salt and blend again. Taste and adjust seasoning if necessary.
Pour the dressing over the seafood and toss to coat. Add a few slices of lemon to the bowl, cover with plastic wrap and place in the refrigerator for a day to marinate.
Remove the salad from the refrigerator 30 minutes before serving and throw out the garlic cloves. Taste the salad and add salt or a squeeze of lemon if needed. Serve the seafood salad with lemon slices and garnish with fresh parsley.
Enjoy!