Hide image title on mobile?

I'm trying to find a way to hide the "feature" of showing the image's title when viewing a gallery on a mobile device. (Same title bar on hover over on desktop that I'd like to hide as well). I have my galleries set to landscape collage, and every image, only on mobile, has the opaque white title bar across the bottom. And since every image starts with my client's names, it's just their names repeated hundreds of times. Anyway to hide this for mobile or mouse hover-over? Tricky thing, a fix shouldn't negatively affect SEO at all