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Do Strobes and Video Lights Negatively Impact Sea Life


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#1 DS256

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Posted 05 November 2017 - 03:41 PM

I Googled the above and didn't find much but did find this

 

"When the flash went off the fish convulsed and shot away in panic like it had been fired from a rail gun right smack into a limestone boulder. I will never forget the sound of pounds of flesh and bone hitting solid rock at that velocity. A lot of you have had the experience of feeling sound underwater, particularly lower frequencies. I felt that fish's head hit the rock and it resonated in my own head just a couple of feet away. The force and weight of the impact made a sound that still makes me wince."

 

Are there any studies? I've seen some comments about concerns around sea life that does not have eyelids.



#2 SWink

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Posted 05 November 2017 - 04:19 PM

A friend of mine published an article on the effects of flash photography on seahorse a few years back. It may be of some interest

https://s3.amazonaws...aphy_affect.pdf


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#3 DS256

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Posted 05 November 2017 - 04:59 PM

Thanks SWink. Fasicnating especially this summary "The effect of underwater flash photography on H. whitei movements was not significant; however, the effect of handling H. whitei to take a photograph had a significant effect on their short-term behavioural responses to the photographer"



#4 String

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Posted 20 January 2019 - 06:59 AM

I think it varies with strobes at least.

 

From my experience, most marine life seems to see and hate a bright video light in their face.  Pretty much all the subjects i point one at visibly recoil or shy away (i dont do macro though).

With strobes its a little different, im fairly sure some types of marine life cant actually see the flash because its so fast and theres no reaction at all whereas others clearly do and do blink or recoil.

 

For example Cephalopods such as Octopus and Cuttlefish visibly blink and sometimes recoil when a strobe fires.  Turtles also.

Whereas Triggerfish Lionfish, Parrotfish, Lobster and other reef fish seem to have no reaction what-so-ever.

 

Edit:- just noticed the year.  I thought this thread was a few months old not a year and a few months!


Edited by String, 20 January 2019 - 06:59 AM.


#5 DS256

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Posted 20 January 2019 - 07:19 AM

Thanks String. Doesn't matter how old this topic is. Still relevant.