1. Soak arame or hiziki in water for 10 minutes.
2. Simmer for 10 to 15 minutes; drain.
3. LIghtly steam carrots; rinse with cold water.
4. Cook pasta as package directs.
5. Mix pasta, arame, carrots, and green onions.
6. Prepare dressing; add to salad.
7. Mix well; chill before serving.