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Under a Moon Spell: Shark Attacks Related to Lunar Phases

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Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby Dave_5280 » Wed Jan 12, 2022 7:49 pm

Under a Moon Spell: Shark Attacks Related to Lunar Phases

https://www.katc.com/news/covering-lou ... nar-phases

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby RickI » Wed Jan 12, 2022 8:12 pm

"Lunar lighting?!" There are other factors, more important ones considering the article says most attacks occur in daylight, sigh.

Tidal activity.

The fuller the moon, the higher the tide. Higher tides have been associated with more fish activity, hence ...

The researchers should get away from number crunching for a while and get outside to see some real world correlations.
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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby Blackened » Thu Jan 13, 2022 2:38 am

RickI wrote:
Wed Jan 12, 2022 8:12 pm
"Lunar lighting?!" There are other factors, more important ones considering the article says most attacks occur in daylight, sigh.

Tidal activity.

The fuller the moon, the higher the tide. Higher tides have been associated with more fish activity, hence ...

The researchers should get away from number crunching for a while and get outside to see some real world correlations.
They specifically said lunar lighting was obviously not the cause of it. They based their tide data off lunar illumination to approximate high/low tides. They also specifically mention tidal activity in relation to many other species being more active as the speculative cause, but more research is needed.

Did you even read this?

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby Dave_5280 » Thu Jan 13, 2022 3:11 am

They mention most attacks occur during the day. They don’t mention that most people aren’t in the water at night, but the article is more of a brief summary.

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby RickI » Thu Jan 13, 2022 10:06 pm

?

"While the exact cause remains unclear, the researchers found that more shark attacks than average occur during periods of higher lunar illumination and fewer attacks than average occur during periods of lower illumination. Many different types of animals show behaviors that are linked to moon phases yet few studies to date have looked at the connections between lunar phases and shark attacks."

I am familiar with the database they used, the International Shark Attack File at UF having referenced it for quite a few years on regular intervals.I have also provided information to them on some attacks. The ISAF has also tried to identify patterns in the attacks including time of day, many years back. Barring the introduction related "illuminating" causes, it is reasonable to conclude that lunar illumination in daylight has nothing to do with the frequency of shark attacks. Tides could be a different matter which are correlated to the same lunar cycle but related to gravitational effects, distortion of the earth as opposed to reflected light. In my experience opportunity and stimulus are key factors in shark attacks on humans.

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby pstkk » Fri Jan 14, 2022 2:59 am

RickI wrote:
Wed Jan 12, 2022 8:12 pm
"Lunar lighting?!" There are other factors, more important ones considering the article says most attacks occur in daylight, sigh.

Tidal activity.

The fuller the moon, the higher the tide. Higher tides have been associated with more fish activity, hence ...

The researchers should get away from number crunching for a while and get outside to see some real world correlations.
It's not about light if you read the research article: https://www.frontiersin.org/articles/10 ... 45221/full

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby RickI » Fri Jan 14, 2022 11:01 am

It seems to come down to a questionable choice of phrase. That is using “lunar illumination“ versus “lunar phase.“ Or they might’ve couched it in terms of lunar apogee and perigee based on proximity and gravitational effects. The illumination they refer to is of the moon, I think, and not reflected to the earth which is confusing.

Anyway the news guys in Louisiana could’ve been clearer but the peer reviewed article itself does run on a bit.

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby TheRussian » Fri Jan 14, 2022 11:36 am

RickI wrote:
Wed Jan 12, 2022 8:12 pm
The researchers should get away from number crunching for a while and get outside to see some real world correlations.
Seems the number crunching is relevant... :roll:

100 million sharks are killed each year...an estimated 6.4% to 7.9% of all shark species in the world are killed each year. This figure, converted into hours, amounts to 11,416 sharks killed worldwide every hour

The 2020 worldwide total of 57 confirmed unprovoked cases was lower than the most recent five-year (2015-2019) average of 80 incidents annually. There were 13 shark related fatalities this year, 10 of which were confirmed to be unprovoked. This number is above the annual global average of four unprovoked fatalities per year.

lets not forget... when you enter the ocean you become part of the food chain... just that the stats show that sharks are not the apex predator

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby Bille » Fri Jan 14, 2022 2:01 pm

From 1977 to 1997 , I surfed under a near to full moon in San Diego
perhaps 3 times a year ; it was Fun, but maybe not the best decision
i ever made ? It would really suck ; getting eaten by a shark !

Bille

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Re: Under a Moon Spell: Shark Attacks Related to Lunar Phases

Postby RickI » Fri Jan 14, 2022 5:41 pm

TheRussian wrote:
Fri Jan 14, 2022 11:36 am
RickI wrote:
Wed Jan 12, 2022 8:12 pm
The researchers should get away from number crunching for a while and get outside to see some real world correlations.
Seems the number crunching is relevant... :roll:
I think the confusion started with the wording in the news article. The journal article is more to the point if not a bit long. Peer review in the time of Covid?

I like diving, kiting with and photographing sharks. I try to do it regularly. At the same time I don't confuse them with sweet puppy dogs. They deserve both respect, understanding and shouldn't be exterminated either. Our impact to the ocean is messing things up in general aside from specific culling of sharks. When you start impacting major ocean currents, the effects will be far reaching beyond any specific fishery. Still, I would be happy to see shark fin soup vanish into the past today.
Lemon shark pass fb.jpg
This large lemon shark suddenly hit me just after this shot for lateral line taste of wetsuit. It makes for interesting imaging.
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