A The Sea Within a tagok névsora alapján akár szupergrupnak is nevezhető: Daniel Gildenlöw (Pain of Salvation), Roine Stolt (3rd World Electric, The Flower Kings, Transatlantic, stb.), Jonas Reingold (3rd World Electric, The Flower Kings, The Tangent, stb.), Tom Brislin (Spiraling), Marco Minnemann…