# How do fish make electricity?

- Institution: TED
- Department: TED-Ed
- Speaker: Eleanor Nelsen
- Year: 2017
- Level: For everyone
- Language: English
- Subjects: Biology, Teaching and learning
- Source: [TED](https://www.ted.com/talks/eleanor_nelsen_how_do_fish_make_electricity)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Nearly 350 species of fish have specialized anatomical structures that generate and detect electrical signals. Underwater, where light is scarce, electrical signals offer ways to communicate, navigate, find, and sometimes stun prey. But how do these fish produce electricity? And why? Eleanor Nelsen illuminates the science behind electric fish. \[Directed by Franco Barroeta Fonseca, narrated by Julianna Zarzycki, music by Christopher Bullé-Goyri\].

## Lectures

1. [How do fish make electricity?](https://invisiblenetwork.ai/learn/ted/eleanor_nelsen_how_do_fish_make_electricity/2def2d4a831a), 5 min (TED's player)