# Heidi M. Sosik: The discoveries awaiting us in the ocean's twilight zone

What will we find in the twilight zone: the vast, mysterious, virtually unexplored realm hundreds of meters below the ocean's surface? Heidi M. Sosik of Woods Hole Oceanographic Institution wants to find out. In this wonder-filled talk, she shares her plan to investigate these uncharted waters, which may hold a million new species and 90 percent of the world's fish biomass, using submersible technology. What we discover there won't just astound us, Sosik says — it will help us be better stewards of the world's oceans. (This ambitious plan is one of the first ideas of The Audacious Project, TED's new initiative to inspire global change.)

- Kind: Talk
- Year: 2018
- By: TED.com
- Genres: Education, Science, Nature
- Archive: [Internet Archive](https://archive.org/details/HeidiMSosik_2018)
- Licence or status: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/HeidiMSosik_2018?play=1)