Allot of divers now use GoPro cameras to capture footage of the fun we have in the water. The smallest GoPro camera yet has just been released. The GoPro Hero3. The Black edition sells for $399 US. It’s certainly more pricy compared to the previous models and I’m not sure if a free diver will really benefit too much. There is a Silver & White edition for $299 and $199 US respectively that miss out on a few features like ultra high resolution and framerate. I really do like the new size and that they have learnt to make a decent underwater housing, for free! A good review can be found at CNET.
For $199 the entry level camera is so cheap, I can see divers heading out with head & gun mount on the same dive. I hope to see some Dolphins sending in footage for all to see 🙂 Be a Hero! Continue reading GoPro Hero3 announced→
iki jime (ike jime) Humane killing of fish Ikejime (活け締め) or Ikijime (活き締め) is a method of paralyzing and bleeding fish to maintain its quality. The technique originated in Japan, but is now in widespread use. It involves the insertion of a spike quickly and directly into the hind brain, thereby causing immediate brain death. A fish brain is usually located slightly behind and above the eye. When spiked correctly, the fish fins flare and the fish relaxes, immediately ceasing all motion. The blood contained in the fish flesh retracts to the gut cavity, which produces a better coloured and flavoured fillet. This method seems to minimize the pain.
Erez Beatus – Free diving coach and former world record holder explaining the risk of Samba & (Shallow Water) Blackout while free diving. Thanks to NSUC & USFA
Samba is a loss of motor control. It is a partial loss of physical or mental integrity and generally occurs up to 15 seconds after reaching the surface, normally during your first breath after a dive. It happens due to not having enough oxygen in your brain.
A Blackout in freediving is often called Shallow Water Blackout (SWB) as it most often occurs while ascending the last few metres of water. It happens due to lack of oxygen due to rapid changes in pressure.
Very briefly, it is thought that Hyperventilation is the leading cause of blackout as it lowers the amount of CO2 in your body which lessens the urge to breathe. The Shallow Water Blackout Wiki explains this all in much more detail: http://en.wikipedia.org/wiki/Shallow_water_blackout
This week another boat incident was mentioned in a post on SpearOZ.org called Divers Beware!!!. The incident was at Malabar and luckily the boat only managed to catch the float line and rip the gun out of the divers hand. See more from the link above.
This rekindled the discussion on changing the Dive Flag we spear fishermen currently use on our floats. We are generally in agreement that the international diver down flag (red with white diagonal line) is better due to its increased visibility on the water. Efforts are being made by various people to make this change for our safety.
Special note: The blue and white Alpha flag is required to be flown on a boat when you have a diver in the water. This is required by the International Rules for Prevention of Collisions at Sea (IRPCS) Rule 27 (e).
For your own safety, always dive with a float and flag. Probably the most dangerous part of our sport is boat traffic so making an effort to be seen is in everyone’s best interest.
There has been a mention in the Clareville Alliman thread about popular Mosman Whaler spearo Steve Wayne being hit by a vessel so I thought I would put out a brief run down, basically to further enforce to you all out there just how careful you must be in the water. People ask me about shark shields all the time, my reply these days is, “forget the shark shield spend the money on as big as float and flag as is practical, you have far more chance of being struck by a vessel as you do being hit by a shark. Especially along the East Coasts temperate waters.