Bring a large saucepan of water with a steamer basket to a boil over high heat. Add snow peas to the basket and cover. Cook for 2 minutes, then remove basket and transfer the snow peas to a bowl of ice water to stop cooking. Drain, pat dry, and set aside.
Add the shrimp to the saucepan of boiling water and cook for 2 minutes.
Drain and place the shrimp in a bowl of ice water to stop cooking. Drain and pat dry.
Slice each shrimp in half lengthwise and cut the snow peas diagonally into 1/2-inch pieces, discarding the ends. Toss shrimp and snow peas in a large bowl with radishes and green onions. Set aside.In a small bowl, whisk the rice vinegar, both oils, and ginger.
Season with salt and black pepper, to taste.Drizzle dressing over the cooked shrimp mixture and toss to combine. Sprinkle with toasted sesame seeds and serve immediately. Enjoy!