Now you can quickly find 360-degree YouTube videos. Open YouTube's desktop site or YouTube's Android app, type a query, click the Filters button and select 360° from the Features section. Here's an example for [Finland].
In the Android app, tap the Filters button next to the search box and select 360°.
Here are the search results for [beach]:
For now, 360-degree spherical videos are only fully supported in Chrome for desktop and the YouTube app for Android.