1. Prepare an ice-water bath and set aside. Fill a medium saucepan with water and bring to a boil over high heat; generously salt water and return to a boil. Add snow peas and cook until just tender-crisp. Drain and transfer to ice-water bath to cool. Drain and transfer to a medium bowl. Repeat process with snap and fresh peas. Add pea tendrils to bowl with snow, snap, and fresh peas and set aside.

2. In a small bowl, whisk together vinegar and olive oil; season with salt and pepper. Drizzle over pea salad and add crabmeat; toss to combine. Serve.