# @bbcearth on Instagram

- **Type:** Video
- **Original URL:** https://www.instagram.com/p/DbNxA62km6P
- **Gondola URL:** https://gondola.cc/posts/68286288-bbcearth-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/9dbc1dbaf4.jpg
- **Posted:** 2026-07-25T14:00:39.000+00:00
- **Account Owner:** BBC Earth (@bbcearth) — https://gondola.cc/bbcearth

## Caption

Is the anus an underrated innovation? 🍑

Mutations in an ancestor called the urbilaterian lengthened their bodies over generations. A tube formed with a mouth for eating and an anus for pooing. This was a breakthrough invention creating the one-way through-gut for continuous feeding.

Find out where to watch Evolution via the link in our bio 🔗💚

#Evolution #ChrisPackham #Nature

## Stats

- **Views:** 160,058
- **Likes:** 5,242
- **Shares:** 0
- **Comments:** 80

## Tags

evolution, nature, chrispackham

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