Cook the brown rice according to package directions and set aside 0.25 cup of cooked rice for the bowl.
Slice the cucumber into thin half-moons, thinly slice the radishes, and cut the avocado into small cubes.
Pat the salmon dry with a paper towel and cut it into 1-inch cubes, then season evenly with sea salt and black pepper.
Heat the avocado oil in a non-stick skillet over medium-high heat and sear the salmon cubes for 2-3 minutes per side until a golden crust forms.
In a small bowl, whisk together the tamari, rice vinegar, and grated fresh ginger to create a zesty dressing.
Slice the nori sheet into thin strips and finely chop the green onion.
Assemble the bowl by placing the cooked brown rice at the base, followed by the seared salmon cubes, cucumber, radishes, and avocado.
Drizzle the ginger-tamari dressing over the entire bowl and garnish with sesame seeds, green onion, and nori strips.