Fill a large pot with water and bring it to a boil. Add the Old Bay seasoning, salt, and black pepper.

Add the potatoes and cook for about 10 minutes until slightly tender.

Add the corn, onion, and garlic, and cook for an additional 5 minutes.

Add the shrimp, crab legs, mussels, and clams to the pot. Cook for another 5-7 minutes until the seafood is cooked through and the shells open.

Remove the pot from heat and strain the seafood and vegetables.

Transfer to a serving platter and drizzle with lemon juice.