Shark Shield

Shark Shield

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Shark Shield - 29 October 2008 13:05:41

Paul Rebelo

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I'm looking to plan a trip to the Blowholes area near Quobba and taking my kayak. I'm a little worried about sharks. Not so much about them attacking the yak, but rather them having a go at hooked fish as I'm pulling them in and knocking me over in the process. I'm thinking I could turn this thing on (shark shield) after I've hooked a fish rather than having it on all the time. Has anyone fitted their yak with one of these things and do you have a recomendation?

< Message edited by Paul Rebelo -- 29 October 2008 14:07:17 >

Post #: 1

RE: Shark Shield - 29 October 2008 16:52:54

Daniel Mance

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From: TLC Basement
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Shark shields really only work by having them on constantly mate. The battery lasts a fair while so there's really no reason not to.

I've dived with one a few time. Didn't get eaten. Thats about as good a testimonial as i can give

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Mancey

On the v5 revision...

quote:

ORIGINAL: David Adams
I reckon it is a wishy washy decision. Talk about Nero fiddling while Rome burned.

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RE: Shark Shield - 29 October 2008 18:42:12

Allan MacSween

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I used one for about the last 18 months and have seen it work a couple of times, once whilst trying to reel in a small shark when each time I got it close it went ballistic trying to get away, turned the unit off and the little noah came in like a puppy dog.

Well worth having in my opinion

Al.

(in reply to Daniel Mance)

Post #: 3

RE: Shark Shield - 29 October 2008 19:15:48

Paul Rebelo

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I wouldn't want the shark shield on while I'm fishing, incase it keeps te fish away. By turnig it on when I've hooked a fish, I'm hoping to discourage a bitey from appoachig the yak while I'm attempting to land the fish. I'm not concerned with concerving battery.

(in reply to Allan MacSween)

Post #: 4

RE: Shark Shield - 29 October 2008 19:34:28

Allan MacSween

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It doesnt do anything to deter the fish mate, sharks have different sensory (sp) organs that are effected by the sheild.

Al.

(in reply to Paul Rebelo)

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RE: Shark Shield - 29 October 2008 19:50:35

Colin Peasey

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From: Posh, affluent town of Kwinana
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I think its affects stingrays also, i am pretty sure someone saw them react to one.

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RE: Shark Shield - 29 October 2008 20:20:51

Daniel Mance

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From: TLC Basement
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quote:

ORIGINAL: Paul Rebelo

I wouldn't want the shark shield on while I'm fishing, incase it keeps te fish away.

Shark shields work by overloading a sensory organ on cartilaginous fishes (ie sharks and rays) called the Ampullae of Lorenzini

Normal bony fishes don't have such an organ, so no, it won't turn the fish off mate. I've dived with them and can assure you it doesn't discourage fish in the slightest

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Mancey

On the v5 revision...

quote:

ORIGINAL: David Adams
I reckon it is a wishy washy decision. Talk about Nero fiddling while Rome burned.

(in reply to Paul Rebelo)

Post #: 7

RE: Shark Shield - 30 October 2008 8:27:46

Paul Rebelo

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I've been doing some research on the shark shields and there have been cases where divers wearing these have still been attacked and injured. There was one case in SA where an abalone diver wearing two shark shields was attacked by a white pointer. It seems the shark shield is not as affective on fish with bigger masses, you'll need a more powerful machine to deter the bigger ones. And it's those big bronzies that I'm worried about.

(in reply to Daniel Mance)

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RE: Shark Shield - 30 October 2008 11:32:51

Brett Ozanne

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From: Perth, S o River
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At the end of the day tho Paul, i think theres fairly solid evidence to prove Shark Shields do offer protection from sharks in close quarters. If it eases your mind i would definatley reccomend it, as it would certainly offer more protection than not having one.

I think the argument is, that if you are fishing, and theres a lot of fish blood, and other attractant in the water, you are pulling in super stressed fish, and the shark is in full blown attack mode, nothing will help you.

A lot of recorded attacks on kayaks go like this, shark comes up and hits kayak, shark swims off. I think in these cases they are mistaking the yak for some other type of ocean dwelling creature, and once theyve hit you, its all cleared up. There are very few reports of sharks making repeated attacks on kayaks.

Someone will probably link the case in New Zealand fairly recently, and i think it has been linked in these forums before. But seriously, longlining from a yak, in well known shark infested waters, with mass amounts of berly, and many stressed, struggling fish around you and coming onto your kayak, probably isint a great idea to start with...

< Message edited by Brett Ozanne -- 30 October 2008 12:35:12 >

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RE: Shark Shield - 30 October 2008 11:49:17

Michael Hermans

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quote:

divers wearing these have still been attacked and injured. There was one case in SA where an abalone diver wearing two shark shields was attacked by a white pointer.

He was wearing a shark sheild but it was NOT TURNED ON.
Some divers turn them off around reef to prevent repeated accidental shocks when crawling in caves and overhangs.

Shark Sheilds only work when they are turned on and the batteries are not flat.

(in reply to Brett Ozanne)

Post #: 10

RE: Shark Shield - 30 October 2008 12:15:58

Allan MacSween

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From: under a rock somewhere
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quote:

ORIGINAL: Brett Ozanne

Someone will probably link the case in New Zealand fairly recently, and i think it has been linked in these forums before. But seriously, longlining from a yak, in well known shark infested waters, with mass amounts of berly, and many stressed, struggling fish around you and coming onto your kayak, probably isint a great idea to start with...

He also gashed his leg when trying to cut the long line off and had his blood leaking through the scuppers..

Pretty crazy stuff that story.

.....and as stated elsewhere the diver that was attacked did not have his unit turned on.

I've seen mine work and am confident that it does deter sharks, however one would have to be silly to beleive it is 100% guarranteed to protect 100% of the time, and more so if the damn thing aint turned on.

It's the shark you cant see that will get you, and if your unit isnt turned on you might as well not bother taking it.

I wont go out without mine.

Al.

< Message edited by Allan MacSween -- 30 October 2008 13:18:35 >

(in reply to Brett Ozanne)

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RE: Shark Shield - 30 October 2008 14:37:30

Michael Hermans

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A mate of mine Tony V was spearfishing with two others off Kalbarri last year with shark shields. When they got back to the boat after a few sorties they thought they had enough. One of the more gung ho of them saw a nice coral trout under the boat and decided to have a go at it. In his haste he forgot to put his shark shield on and it was not long before a large Tiger shark turned up and went straight for him. The catch bag and speargun were the only items he had to defend himself with and this "ammo" was used up after the 2nd encounter.
By this time the boat crew were aware of the shark and promptly plucked the panic stricken diver from the water.
It's been over a year since this occured and he still won't get back in the water (even with a shark shield)

Tony said he wears his all the time now and has a later model with the longer lasting battery.

(in reply to Allan MacSween)

Post #: 12

RE: Shark Shield - 30 October 2008 18:40:02

Herb Carman

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From: Perth
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I think the best shark shield is another kayaker, preferablly in a yellow kayak..even better another 2, or 3 or 4....LOL

(in reply to Michael Hermans)

Post #: 13