In a large saute pan, heat the olive oil. Add garlic and shallots, and saute until brown. Add the clams, mussels, and rock shrimp. When shells start to open, add the white wine. Reduce to half its volume, then add the marinara and calamari. Heat up the pasta (in salted boiling water) then add to the seafood. Allow pasta to cook in the sauce for a minute, then toss in the basil and bread crumbs. Serve in a deep pasta bowl immediately.