Preheat oven to 400 degrees Fahrenheit.

Combine the onions, tomatoes and zucchini in a large oven to table dish. Toss vegetables with olive oil, salt and pepper and roast for 35 minutes until vegetables start to brown.

Remove pan from oven and increase heat to 450 degrees Fahrenheit.

Add garlic and ginger and toss with the roasted vegetables.

Pat sea bass dry and season with salt and pepper.

Place in the same baking dish and spoon roasted vegetables over the fish. Baste with pan juices. Bake until fish is opaque, about 18-20 minutes. Serve immediately.