Preparation Heat oil in heavy large skillet over medium heat. Add scallops and shrimp and sauté until just cooked through, about 3 minutes. Using slotted spoon, transfer seafood to bowl. Add garlic to same skillet; sauté 1 minute. Add tomatoes and half of basil; simmer until sauce thickens, about 10 minutes. Increase heat to medium-high. Add clam juice and cream and simmer until thickened to sauce consistency, about 6 minutes. Add penne, seafood, remaining basil and toss. Season with salt and pepper.
Preparation Heat oil in heavy large skillet over medium heat. Add scallops and shrimp and sauté until just cooked through, about 3 minutes. Using slotted spoon, transfer seafood to bowl. Add garlic to same skillet; sauté 1 minute. Add tomatoes and half of basil; simmer until sauce thickens, about 10 minutes. Increase heat to medium-high. Add clam juice and cream and simmer until thickened to sauce consistency, about 6 minutes. Add penne, seafood, remaining basil and toss. Season with salt and pepper.