DNOWS Header

Image Map

Friday, February 24, 2012

The Circle Of Life From Red Tide To Pool Filters

Five creatures take to both the salt water and fresh water: bull sharks, La Plata dolphins, salmon, humans and dinoflagellates.

While bull sharks and La Plata dolphins live in both saltwater and freshwater, salmon are born in freshwater, migrate to the ocean and then return to freshwater to reproduce.

But human swimmers and dinoflagellates interact in an interesting manner that may not be readily apparent.

Ocean swimmers who swim through red tide sometimes feel like they are swimming through a massive can of spilled tomato soup in the ocean.

When the red tide blooms, caused by dinoflagellates or small one cell marine organisms, swimmers usually feel the slime of these organisms on the surface of the water. Andy Seretan recalls, "When we wash out our swimsuits after swimming in the red tide, the red color turns to green as the bioluminescence glow in the dark."

But when these same ocean swimmers head to a pool, they encounter the dinoflagellates once again in an indirect way. When the dinoflagellate die, their fossilized matter becomes diatomaceous earth. This matter is mined and is used to coat swimming pool filters, serving as minute sieves to remove debris as small as 5 microns.

From red tide to pool side...the circle of life in the open water world is always interesting.

Copyright © 2012 by Open Water Source

A Thank You Gift from WOWSA

WOWSA is celebrating the
1-Year Anniversary of the monthly Open Water Swimming Magazine
by giving you a free copy of the anniversary issue.

Open Water Swimming Magazine Anniversary Issue
File Size: 13MB


Download the file to your computer, and then right-click to extract the magazine which is inside the zip folder. The magazine is in PDF format.

CLICK HERE to download your free copy now.

Open Water Swimming Magazine

Open Water Swimming Magazine

The Open Water Swimming Magazine is the monthly magazine entirely focused on open water swimming heroes and heroines of every age, ability, and background. Published by the World Open Water Swimming Association, the Open Water Swimming Magazine is a free benefit to WOWSA members.

WOWSA Member Benefits include 12 issues of the Open Water Swimming Magazine, the annual 276-page Open Water Swimming Almanac, a free listing in Sponsor My Swim, outstanding product discounts from FINIS, an entry in Openwaterpedia and more...

The Other Shore

The Other Shore follows world record holder and legendary swimmer Diana Nyad as she comes out of a thirty-year retirement to re-attempt an elusive dream: swimming 103 miles non-stop from Cuba to Florida without the use of a shark cage. Her past and present collide in her obsession with a feat that nobody has ever accomplished. At the edge of The Devil’s Triangle, tropical storms, sharks, venomous jellyfish, and one of the strongest ocean currents in the world, all prove to be life-threatening realities. Timothy Wheeler’s documentary brings Diana Nyad’s extraordinary adventure to life as Diana sets out to prove that will and determination are all you need to make the unimaginable possible.

2014 Open Water Swimming Almanac

An Almanac for Open Water Swimming

An almanac is essentially a body of knowledge which is so complete that it enables people in different fields to make predictions about the future of their respective industries.

This, for example, was the purpose of the traditional farmers almanacs. It enabled farmers to determine as accurately as possible which crops to plant for the greatest harvests in a given year.

But the farmers almanac was just one example among many.
There are, of course, many different kinds of almanacs.

In fact, there is even one for open water swimming...

Preview the Open Water Swimming Almanac:

The trends are very clear.
The tide is rising for open water swimming.


Open Water Swimming Event Sanctioning

World Professional Marathon Swimming Federation

Open Water Race Calendar

Coaches Education Program