Make spaghetti and set aside

To make sauce, saute onions and garlic in hot oil until tender, but not brown, in large saucepan

Add tomatoes, stir and let come to a boil

Lower heat and boil gently for 30 minutes

Add basil and oregano

Cook for another 15 minutes

Meanwhile, cut under-shells of lobsters lengthwise, leaving top shell intact

Remove lobster meat whole and wash thoroughly

Add lobster meat to sauce

Simmer for about 30 minutes, covered

Meanwhile cook spaghetti al dente, drain, and arrange in center of a heated serving platter

Remove lobster tails from sauce then pour sauce over cooked spaghetti

Arrange lobster meat around spaghetti with sauce

Serve immediately.