In this video, we'll examine part of a large seashell collection that I purchased recently at a yard sale. It's a really big collection, so we'll do the first half in this video and the second half in another (whispered) video later on.
To listen while using other apps, switch the player to Picture-in-Picture (PiP) during playback — it keeps playing in a small floating window (the screen stays on).
To listen with the screen fully off, in-browser playback stops by YouTube's design. Open the video in the YouTube app to keep listening where background playback is supported (e.g. with YouTube Premium).
Open in YouTube app