Liquivision Lynx and Ultrasonic Frequencies - safe for sea animals?

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I won't have any effect. The amount of power you can get out of a battery that size with an expected life of months or years is insignificant.

If any animals can hear it, at the most, it would be annoying or interesting.

In fact, it's so low power that the FAQ indicates that the air in your drysuit may block the signal.

flots.

Thats crazy a drysuit may block the signal! Sounds more like a disclaimer to me.
 
Thats crazy a drysuit may block the signal! Sounds more like a disclaimer to me.

Sounds reasonable to me: a sizable air pocket filled with meat, bone, and plush fabric is a lousy conductor of sound.
 
Sounds reasonable to me: a sizable air pocket filled with meat, bone, and plush fabric is a lousy conductor of sound.

...especially ultrasonics.
 
https://www.shearwater.com/products/teric/

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