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Well, I am not sure what you feel is lacking in the PFD course, the training is pretty thorough.... and nobody Samba'd during my class. Four days of instruction in physiology, safety, and open water practices. A number of newbies, myself included made it to 100ft on our first day. This month...

Yea, deeperblue has it going on... sometimes you find folks out here though... Regarding "holdingmybreath": You will see dramatic improvements in both durations and comfort levels. If you are tolerance training and you learn how to initialize the mammalian diving reflex, you will amaze...

I have a couple of questions... How many of you who spearfish, snorkel or freedive, practice Tolerance Tables? I wonder how many of you Samba when you are doing tables? Particularly when the ventilation cycle doesn't allow for an even number breaths that end exactly when you should start...

I wouldn't worry about being stalked and assaulted by a reef shark.... its the Tigers and the Bulls that need to be respected in this situation. These animals move on shore to hunt turtles and each other and it is not a good idea to be on the surface puddling around after sundown. Of course...

Howdy, Yea, sharks come in at night, especially Tigers who are hunting turtles. I wouldn't do it, personally. It is different when you are wearing tanks and a regulator.... the sounds are odd enough to put off most sharks. You might consider looking into a shark repeller and a bang stick...

I agree.... BE CAREFUL - DON"T DEEP DIVE SOLO!! I have to say that exploring one's potential should be done very carefully and deliberately. Its always best to take courses and study well. I am a PFD graduate and continue to watch and learn. And one should always dive with a partner.... If...

Just for fun, here are the Phase 20 Tolerance tables in case you thought that the first phases were challenging.... Phase 20 02 set vent - static- static% 1. - 1:00 - 4:45 - 476% 2. - 1:00 - 5:00 - 500 3. - 1:00 - 5:15 - 525 4. - 1:00 - 5:30 - 550 5. - 1:00 - 5:45 - 575 6. - 1:00 -...

Actually, Martin is Eastern European, don't know which country..... The www.performancefreediving.com team is the one that set the records, without a sled... He is an amazing guy. I learned a lot from their program and would recommend it to anyone who is serious about freediving safely and...

Hello, Regarding the Vacuum Effect, it is more related to pressure rather than gas imbalances. from my manual: Gas levels, mainly oxygen and carbon dioxide are continously balancing themselves in the body, between the lungs and body tissues. The body draws 02 fro the lungs, as it...

My gear for up to 160ft... Technisub Sphera Mask - lowest volume commercial mask 76ml 3mm Wetsuit (hawaii) Carbon Fins (I have Specialfins, they are great!!) Finkeepers (Neoprene collapses at depth and you need your fins to stay on!!!) Weights - neutral at 10meters...

Ok, we can explore this... As you dive past 40 meters, your lung function ceases. They compress to the size of oranges and your chest cavity compresses. Your ability to equalize your mask becomes inhibited and, eventuall, impossible. As you fall through the pressure gradients, your...

Hmmm, I would contact Omer directly with your shoe size and see what they have to tell you. You might be limited to "open heel" fins. Not a worse case situation, just a different kind of fin. Lungfish

Pool training is great, make certain you have a partner. Lifeguards are notoriously useless if you blackout or Samba. Try lap swims.... one lap on top, one lap kicking, one lap underwater.... or hypoxic training... Like I said, don't push it without a partner. I know it isn't convenient but...

Most definitely check out those two resources. Amphibious and I are fairly active there. All the info you need to move yourself forward can be found there. And the PFD courses are great. I have taken them and the physiology training alone is worth the money. There are lots of ways of improving...

Hi All, The big differences in freediving fins, aside from design, is materials. The Omer Milleniums are a plastic fin. They have a limited lifespan before they become too flexible and brittle, and they aren't much use below 75ft. I took a pair to 140ft and almost didn't get back - way too much...

I took my formal freediving training with Martin at the Performance Freediving Clinics in Kona. Once, while we were practicing on the mooring lines, one of our group got their dive belt clip hung-up on the mooring line and it released the belt in 220ft of water at the mouth of Honaunau -...

Response seems to be species specific and is related to several other factors. Basically, in the best conditions, the animals become intoxicated, for lack of a better word... You can't test this with a regulator on and you have to have the attention of the pod so you must get into their groove...

Hi All, Bouyancy is a great topic.... A dive has three phases, unless you compete then its two phases.... Descent, bottom time and ascent. Usually the ascent is less pleasant because it arrives at the end of the dive cycle. Weights should be used in a way to safely distribute effort...

for my two cents worth, a plastic fin like an Omer Millenium works just fine to puddle around on top and do some bounces to even 75-80ft. The long fin makes laying on the surface quite easy and you can motor around without much discomfort, especially if you choose the most flexible option. I...

Hi All, Fishoutawater: Omer makes good gear..... for some excellant packages take a look at www.spearfishinggear.com click on "Packages". The Omer Black is a good starter package - Omer Milleniums, booties, snorkel and a great starter mask, the Omer Alien. I used it when I first started and...