Cook the brown rice according to package instructions and set aside 0.25 cup to cool slightly.
Dice the raw salmon into 1/2-inch cubes and place them in a medium glass bowl.
In a small jar or bowl, whisk together the tamari, rice vinegar, sesame oil, grated ginger, and minced garlic to create the marinade.
Pour the marinade over the salmon cubes and toss gently to coat, allowing it to sit for 5 minutes for the flavors to meld.
Slice the cucumber into half-moons and the radishes into very thin rounds.
Place the cooked brown rice in the bottom of a serving bowl.
Arrange the marinated salmon, shelled edamame, cucumber, and radishes in sections on top of the rice.
Garnish the bowl with sliced green onions, sesame seeds, and a pinch of sea salt before serving immediately.