One thing that I get asked about by students and customers often, or find that there is a lot of confusion around, is sea conditions and how the weather effects us as free divers. When I talk about "waiting to see how the weather is on X day" a new diver or non-diver will often think about if the sun is out or if it might rain, which is of much less importance to us than the wind strength. Lets be clear: freediving in strong wind is not fun! For scuba divers, they can get in and go down and not feel the effects too much, while trying to relax on the surface can be quite a challenge in even moderate wind or chop.

So lets look at 4 of the main sea conditions that can be experienced:

Wind (Chop): The effect of the wind passing horizontally over the surface of the water causes localised waves which can range from small and insignificant to large and powerful (see Beaufort Wind Scale). Wind does not necessarily cause sea current and can often be in completely the opposite direction!
Wikipedia WIND information HERE

Tide: The rising and falling of the sea, usually twice in one lunar day due to the attraction between the moon and sun. Therefore tides are a predictable factor and in many parts of the world regularly updated and accurate 'Tide Tables' are available, mainly to help with shipping and other sea traffic.
Fact: The Mediterranean Sea does not get strong tides due to the narrow inlet at the Straits of Gibraltar that connects it to The Atlantic Ocean.
Wikipedia TIDE information HERE

Current: The movement of the water, often in a horizontal direction, often caused by water temperature differences. There can be ocean currents on a predictable global scale as well as more local currents
Wikipedia CURRENT information HERE
NOAA information HERE

Swell: This comes from distant weather conditions rather than local. Often in the sea it is experienced as the residual effect after a period of strong wind, where it is no longer locally windy but there is still a distinct up and down movement of the water, most noticeable on the shore line. Swell can travel thousands of kilometres through the sea.
Wikipedia SWELL information HERE


To efficiently read the weather, an app such as Windfinder (and more so the 'Pro' version which gives more detailed information). is a must for anyone that is in or on the sea on a regular basis. Also, the use of the 'Beaufort Wind Scale' is an invaluable way to gauge prevailing wind conditions purely by sight. Wikipedia information HERE

I hope you found this blog post interesting, let me know your thoughts in the comments.

Poem about the sea by D. H. Lawrence

You know that feeling. You've just flown out for your annual holiday to the dream destination and you have been planning this trip for the past year. Warm blue water awaits you, long fins at the ready, and then you feel it. The soreness at the back of your throat and the tickling in your nose....the cold you dreaded is here! Pretty much a disaster for any freediver on holiday
After suffering one recently I thought I would answer and look at a few of the questions and myths around the common cold:
Are you are more likely to catch a cold on a flight?
Yes. But it's not the circulating air on the plane as most people think. Simply being in a confined space with so many other people, increases the risk of germs spreading. ALTHOUGH, re-circulated air is more likely to give you sinus problems (another issue for freediving). Also, low humidity in the pressurised cabin increases the risk of infection.
Why is a cold a problem for freediving?
The cold virus is attacking the membranes of your nasal passages and your sinuses which makes them swell up and increase mucus production. This clogs up the sinus passages causing increased pressure and pain. During a dive air in the body expandes and needs to be able to move which it can't do as easily if these passages are blocked.
So we know there is no cold cure, but what can degongestant medication do?
As we all know, there is no cure yet for the common cold. Antibiotics will only fight bacteria, not viruses. Decongestants (tablets or spray) can shrink the swollen blood vessels in the nasal passages, lessening the pressure and helping with drainage.
Is it safe to freedive using decongestant medication?
​Most research and advice on this topic is related to scuba diving (diving and descended under pressure for 30-45 minutes at a time). In scuba it is possible for the medication to wear off in that time causing problems on ascent. Freediving has different issues, most notably faster ascents and a lack of time to be able to stop and react if a reverse block (sinus pressure increasing from expanding air on ascent that is unable to escape the nasal cavity) occurs. Generally speaking it is risky, and anyway, if you are sick with a cold your body is fighting the infection and so is weaker and will therefore not be transporting oxygen as efficiently. Therefore you wont be feeling great and should not really be undertaking strenuous activity or pushing your limits!
Are there natural solutions for reducing congestion?
Inhaling steam such as in a hot shower or from a bowl of hot water. Adding an essential oil such a eucalyptus which has anti-inflammatory properties, can help. The hot steam dilates the blood vessels allowing increased blood flow and circulation, alleviates soreness and inflammation and liquifies mucus secretions making it easier to clear. Keeping hydrated also will allow the body to fight the virus quicker. Nasal irrigation such as a 'Neti pot' allows you to wash through the sinuses but this must be done with sterilised saline water and sterilised equipment and might feel uncomfortable if you are not used to it.
Any other options?
Snorkel!!! Most of the colour and marine life is in the top 0-10m of the sea, so you can still experience the wonder of being in the water and make the most of your holiday, even if you cannot dive down :)

One of the questions I get asked most frequently as a freediving instructor is about HOW we can hold our breath longer. What is the 'trick', the 'secret' that can make it easier for us to be underwater deeper or longer. What many people don't realise is the the human body already holds most of the answers!

Here is an overview of the four main diving responses of the human body, collectively known as 'Mammalian Diving Response' (MDR):

Peripheral Vasoconstriction
Trigger: Breath-holding, facial immersion in water, increased pressure
Response: Blood vessels in the extremities of the body (arms, legs) constrict to keep blood prioritised for the vital organs of the body
FACT: A disadvantage of reduced blood flow is increased carbon dioxide and lactic acid build up, but tolerance to these can be increased through training

Bradycardia
Trigger: Facial Immersion in (cold) water, breath-holding
Response: Heart rate slows down by 10-25% in untrained, or up to 50% in trained freedivers, thus conserving blood Oxygen
FACT: In diving seals, heart rate has been measured going from 125bpm to below 10bpm during a dive!

Spleen Effect
Trigger: Breath holding and increased pressure on repetitive deep dives
Response: The spleen contracts and releases more red blood cells which aid oxygen transportation in the blood
FACT: The spleen is not an essential organ, but holds a reserve of blood and is important as part of the bodies immune system

Blood Shift
Trigger: Increased pressure on deeper dives
Response: Blood plasma swells the alveoli of the lungs filling the chest cavity area to prevent barotrauma injury from increased pressure at depth
FACT: Only as recently as the 1970's did scientists begin to understand this phenomenon once divers such as Enzo Maiorca returned from 50m+ dives, injury free!
​
Sign up for AIDA3 (Intermediate) Course at One Breath Freediving to learn more about the Mammalian Diving Response and to reach new depths underwater.

The 2015 'In Water Photographer of the Year' competition is now accepting public voting to decide an overall winner! Category winners are announced for the photography competition that is for freedivers, snorkellers, swimmers and others in the water without using breathing apparatus.
Vote by clicking the link below and deciding how many stars to give your favourite photographs. It's that easy!
http://www.inwaterphotographeroftheyear.com/2015-vote

"Ascent" - Photograph by David Watson

We are super excited to unveil our new logo!
Let us know if you love it as much as we do :-)