Video · CrashCourse
How did ocean invertebrates end up on Mt. Everest?!
Total watch time
54s
at 1× speed · exactly 54 seconds at 1×
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Markdown
[](https://playlistduration.com/video/2Gc77M1OZwc)HTML
<a href="https://playlistduration.com/video/2Gc77M1OZwc"><img src="https://playlistduration.com/badge/video/2Gc77M1OZwc.svg" alt="Length: 54s" width="88" height="20"></a>Add ?speed=1.5 to the image URL for the time at that speed, ?label=Course to change the left text, or ?style=flat-square for square corners.
Want the numbers themselves? GET https://playlistduration.com/api/v1/video/2Gc77M1OZwc returns them as JSON — free, no key. API docs →
Data from the YouTube Data API as of 2026-10-27 (cached).