Season the salmon fillet evenly with sea salt, black pepper, and freshly grated ginger.
Heat a high-quality non-stick skillet over medium-high heat and sear the salmon for 4 to 5 minutes per side until the exterior is golden and the center is just opaque.
In a small bowl, gently fold the rice vinegar into the warm cooked sushi rice to season it.
Thinly slice the cucumber and radishes into rounds, and cut the nori sheet into thin, matchstick strips.
Finely slice the green onion on a bias for garnish.
Assemble the bowl by placing the seasoned rice at the base, followed by the seared salmon fillet.
Arrange the cucumber, radishes, and nori strips around the salmon.
Drizzle the entire bowl with coconut aminos and finish with a sprinkle of sliced green onions.