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We request D-configuration HI observations as well as HST data to image three ultra-diffuse galaxies (UDGs) which are in a group environment and plausibly influenced by tidal forces. These dwarfs provide evidence that UDGs can form through interactions comma although it is not clear whether they are normal dwarf galaxies that have been 'puffed up. during an interaction or if they are tidal dwarf galaxies comma the dark matter-free stellar aggregations that can result from gas-rich major galaxy encounters. Alternatively comma these galaxies may have formed as UDGs through some other mechanism comma and are now associated with a larger galaxy halo. The deep VLA observations are essential for pinpointing HI emission associated with each dwarf and any tidal material. The HST observations will allow for a detailed morphological analysis of each interacting dwarf and will measure their globular cluster content -- a powerful discriminant between formation scenarios. Our team has recently demonstrated the use of combined VLA HI and HST observations in two UDGs comma showing that they likely formed via tidal heating of normal dwarf galaxies. This proposal will more than double the sample of objects studied in this way comma with a focus on systems that show some evidence for recent star formation.