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An underwater navigation system powered by sound

New approach could spark an era of battery-free ocean exploration, with applications ranging from marine conservation to aquaculture.

[news.mit.edu]

FearlessFly 9 Nov 2
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Just another way to make whales deaf?
Sonar is like being strapped to the wall of sound at a Grateful Dead concert for whales.
It's not enough to find something useful to us, the environment needs to be taken into consideration.
This could help, but we seriously need to reconsider sonar.

@StarvingArtist I read the article, that's why I said, "this could help", but sonar still pisses me and whales off.

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Frequency hopping :

[en.wikipedia.org]

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