Zoner Elite Status....9 Lives Minus 2

[WhatsSUP]

Scary Mr. Big....very glad your good albeit a bit shaken up.  Can't even imagine! 

Your interview was great too.....especially highlighting seal problem vs shark problem!

Stay safe,

 

[1tuberider]

You know Biggie you are now part of an elite club.
You and Sue have survived being mauled without injury.
Sue is in the picture southwest posted.

Another friend is in the club but he wears scars.
This is one club I want no part of.

Have you been out yet? I surf with Sue on occasion.
I have known her and her husband Dan close to 30 years.
She paddled in our 5 mile race down the coast run last May.

Big of you to keep kool and get the kids out.
I also hope you get wet soon.

[OUTSIDEWAVE]

DUDE  you didn't fall off!   You Rock!  I would have fallen off thrashed and then got chomped for the thrashing. Did you  see the shark swim a way?  Did he give you the finger or looked pissed off? No dinner tonight!!! 

I gotta agree much bigger than a 5 or 6 footer.  The bite radius in the photo looks bigger that the 2 legs behind the photo holding the board. Could it have been a Bull Shark?

[Luc Benac]

He would have been safer on his 404 GoGo, sharks don't eat vegetable :-)
Glad he was not part of the sandwich.

[Eagle]

Chomp!  Liked the part about getting the kids out without panic.  Awesome bigs.  Bad shark.  No bigs for you!

[Ichabod Spoonbill]

Amazing experience, and I'm glad nobody got seriously hurt. Wow!

[Board Stiff]

Glad you and the kids made it out safe!

[SaMoSUP]

Good thing only your board was tasted. I think with the combination of your pacemaker and prone paddling out on your board, the shark's eyes and electroreceptors said bingo! looks and feels like prey and a big one.

I'm wondering if a GPS/Bluetooth watch in the water emits a strong enough electrical signal to make a shark curious? Same with a GoPro.

[PonoBill]

I was only kidding about the Ampullae of Lorenzini, but now that I think about it, they detect voltages in the water in the range of a five nanovolts which is probably a lot less than the pacemaker emits in monitoring heartbeat. You may well be a shark magnet, Big. Sharks can detect the orientation of the earth magnet field from the voltages that seawater generates by moving in the magnetic field.

[stoneaxe]

LOL....1st thing I thought when I heard it was Mr Big was whether his pacemaker was a dinner bell.

[mrbig]

My gadget is not a pacemaker. Just listens through the wires. If it detects ugly waveforms, or a HR over 214 might send a shock or administer therapies to produce regular waveforms.

It's a great question to wonder if it is emitting EMF when it is monitoring. I have no idea!

Medtronic probably doesn't know either..

[PonoBill]

Sorry, I understood the difference based on your previous explanations but I was using shorthand. Medtronics probably does know. I doubt the monitoring is completely passive, meaning it would be relying on the electrical signals from your heart to drive the amplifiers and signal conditioning that triggers the defibrillation shock. It could be done using optical isolators, but it would probably be noisy and unreliable.

I was curious enough to read a paper on it, and as I expected, most devices use a very small pulsed current to bias an operational amplifier. https://www.hindawi.com/archive/2014/981295/

So yeah, you're sharkbait.

[SaMoSUP]

Yeah kinda like when you turn your TV on/off with a remote. It's not really off unless you unplug it from the socket.

I suspect with more waterproof electrical devices people are taking to the water such as GoPro, watches, GPS, the more curious people may become to sharks.

[mrbig]

Off to have a chat with a Marine Biologist tomorrow who is going to accurately measure the teeth marks and come up with a much more accurate size estimate than my SWAG of 5-7 feet.

Will also discuss the voltages and such that sharks sense. Should be interesting.

Smart watches GPS questions raised here also will be discussed thanks to this thread..

[TallDude]

I'm think that an implanted (ICD) would might actually start ramping up the voltage in capacitors as your heart rate starts nearing it's variable threshold. Your heart rate will spike on a wave and even go higher depending on how you terminate your ride. At that moment the capacitors could be readying themselves for a potential rapid discharge. You know what that feels like. You may be more attractive to the dark side at that moment?