As regards the Sarasvati, in some parts she becomes visible and in some parts she disappears. This celestial seven Gangas is known all over the three worlds.
दृश्यादृश्या च भवति तत्र तत्र सरस्वती। एता दिव्याः सप्तगङ्गास्त्रिषु लोकेषु विश्रुताः॥