Gas flows around galaxies with MUSE

The issue of gas supply and gas outflows is central to galaxy formation. Gas flows can be studied in absorption using background sources or in emission. Both types of signatures (emission & outflows) can be studied with MUSE, thanks to its exquisite sensitivity. I will present the most recent results from the MUSE Gas Flow and Wind (MEGAFLOW) survey on in and outflows with background quasars. In addition, I will present complementary observations of gas flows seen in emission from deep MUSE fields addition using novel techniques