Combine instant rice, minced onion, stewed tomatoes, minced clams with juice, oysters with juice, and wet pack shrimp with juice in a medium saucepan.

Stir to blend all ingredients thoroughly.

Bring the mixture to a boil over medium-high heat.

Once boiling, reduce heat to low, cover the saucepan, and simmer for 5 minutes.

Turn off the heat, but leave the saucepan on the stove.

Keep the pan tightly covered and let it stand for 10 minutes to allow the rice to fully absorb the liquids and flavors.