Also, when you tap the "Albums" tab at the bottom, you'll see that there's one called "People." It's filled with photos containing the individual people most frequently found in your photos. Creepy? Cool? We're undecided.
Finding a super-specific photo is now much easier since Apple uses AI to categorize them with identifying traits. Can't find that one shot from the beach last summer, or of your dog in a boat? Just search "beach" or "dog," and it'll cull every image in your library that matches that query.