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Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 6:13 pm
by steve shearer
Doubt it
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 6:26 pm
by Thud
The shark being from deeper water or they’ll be people pulled in and out of the water unnecessarily all summer?
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 6:30 pm
by steve shearer
Most sharks swimming in deeper water can’t be detected visually. ESP by drones.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 6:51 pm
by Thud
Apparently the one here on weekend was. But hey, maybe he’s full of shit.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 7:37 pm
by steve shearer
I said most, not all.
ask your mate.
any shark swimming in more than 20ft of water is likely too deep to be spotted.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 8:02 pm
by Nick Carroll
Thud wrote: ↑Mon Oct 12, 2020 4:05 pm
Speaking to my life guard neighbour who reckons there will be ample time spent out of the water this year as SLS has been given funding to utilise drone technology shark alerts (think he said 16m). He speculates drone operators and surf club officials will be calling people out of the water for sharks that are spotted in deeper water. He’s predicting a panic stricken pain in the arse Summer.
Example, the shark that was spotted here on the weekend was out to sea. Never came in, apparently.
your lifeguard neighbour is possibly mistaken
drones are very limited in terms of shark sightings and indeed in terms of usage, there won't be all that many in action compared with the number of beaches, and they won't be airborne for more than maybe 1/6 of any one day on any beach. Also the drone has to be over the same piece of water that the shark is in.
it's v difficult to pick up a shark via drone, unless the waters pretty shallow and there is a strong contrast between the shark and the bottom contour ie sand. In deeper water forget it. Drones can't get too far offshore in any case, they can't get out to water that's more than maybe five metres deep off most beaches.
I can't really emphasise this enough, sharks are VERY hard to spot in most cases. You've gotta be super close and really watching closely. Don't be fooled by a handful of youtube videos, they aren't a true indication of whats happening in most cases.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 8:02 pm
by Thud
Well anyway there was the worlds biggest salmon bait ball this morning with a couple of young fella with with a drone. You could clearly see it from the viewing platform, very close to shore. Young fella said “have a look at this” which was the drone screen. Couple of Sharks feeding, he reckoned a Grey Nurse and a Bull. But who knows.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 8:06 pm
by Thud
Nick Carroll wrote: ↑Tue Oct 13, 2020 8:02 pm
Thud wrote: ↑Mon Oct 12, 2020 4:05 pm
Speaking to my life guard neighbour who reckons there will be ample time spent out of the water this year as SLS has been given funding to utilise drone technology shark alerts (think he said 16m). He speculates drone operators and surf club officials will be calling people out of the water for sharks that are spotted in deeper water. He’s predicting a panic stricken pain in the arse Summer.
Example, the shark that was spotted here on the weekend was out to sea. Never came in, apparently.
your lifeguard neighbour is possibly mistaken
drones are very limited in terms of shark sightings and indeed in terms of usage, there won't be all that many in action compared with the number of beaches, and they won't be airborne for more than maybe 1/6 of any one day on any beach. Also the drone has to be over the same piece of water that the shark is in.
it's v difficult to pick up a shark via drone, unless the waters pretty shallow and there is a strong contrast between the shark and the bottom contour ie sand. In deeper water forget it. Drones can't get too far offshore in any case, they can't get out to water that's more than maybe five metres deep off most beaches.
I can't really emphasise this enough, sharks are VERY hard to spot in most cases. You've gotta be super close and really watching closely. Don't be fooled by a handful of youtube videos, they aren't a true indication of whats happening in most cases.
I honestly don’t enough about it. But the shallow water bait ball being hammered by sharks I described above was as clear as day on the drone screen. It was close to shore though.
If it’s difficult to spot sharks on a drone screen I’m wondering why surf living saving have been given the drone funding.
I detected from my neighbours eye rolling when he said it, he wasn’t impressed with the drones coming in this Summer.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 8:31 pm
by steve shearer
drones are a way of providing a visible output for public safety.
ie something is being seen to be done.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 8:33 pm
by Thud
Yes
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 8:36 pm
by steve shearer
I do slightly disagree with Nick that sharks are very difficult to spot.
if they are cruising on sandy stretches in clear water they are very easy to see.
even just on regular rockfishing sessions I see lots of sharks, especially whalers in the summer months.
mostly people are unaware of what is happening around them and don't have the eye for it.
if you don't know what I mean, spend some time with mullet fishos sometime during the season.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 9:31 pm
by Beanpole
Tempting....knocking over cans of Bundy and Cola at 7:00am.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 10:17 pm
by PeepeelaPew
...
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 10:40 pm
by bomboraa
Sharks and most any fish, even something as small as a bonito, are quite easy to spot even in deep water, if you have the benefit of height (hence gamefishing boat tuna towers) the water is clear, it's sunny and the subject is near the surface. A polarised filter over a drone camera lense helps immensely.
Fishos are on the north coast are using drones to spot and carry baits out to longtail tuna off beaches in water more than 15 metres deep.
You just gotta know what you are looking for, sun angle is key, and you gotta have someone who can concentrate for hours.
Re: Just general surfing stuff
Posted: Tue Oct 13, 2020 11:29 pm
by bomboraa
which means it shouldn't be that hard to spot sharks near the surface, except those tend to be the ones just lolling about. Seems when they are in hunting mode they stay deeper.
Re: Just general surfing stuff
Posted: Wed Oct 14, 2020 5:18 am
by steve shearer
we also have the benefit of using seabirds as drones when tuna fishing.
wonder how their visual acuity compares to a drone.
I've caught tuna blind casting to a single tern that kept circling a patch of ocean from a decent height.
Re: Just general surfing stuff
Posted: Wed Oct 14, 2020 9:25 am
by Thud
Seabirds as drones.
That's a Panicked Mummies early EP if there ever was one.
Re: Just general surfing stuff
Posted: Wed Oct 14, 2020 9:26 am
by Nick Carroll
steve shearer wrote: ↑Tue Oct 13, 2020 8:31 pm
drones are a way of providing a visible output for public safety.
ie something is being seen to be done.
There's also a strong nerd element within sls culture, people who can't swim or surf or whatever but totally love the little beach cars and IRBs/jetskis and radios, they are SO INTO the drone thing. They have special names and everything. "UAV" (unmanned aerial vehicle) etc. They set up tents and do training sessions and shit, it's amazing to witness