Cut the raw salmon and tuna into bite-sized pieces.
Dice vegetables such as cucumber, carrot, and avocado.
Prepare rice and place it in a bowl.
Place the prepared fish and vegetables on top of the rice.
Make a sauce by mixing soy sauce, sesame oil, vinegar, etc.
Drizzle the sauce evenly over the ingredients.
Finish with toppings like sesame seeds and seaweed.