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Friday, November 25, 2011
Are Open Water Swimmers Protected By Dolphins?
Many open water swimmers believe that if dolphins or porpoise are near them in the open water, there is no need to fear sharks. The playful mammals, man's best friend in the ocean, are often said to be a sign of good luck and protection.
But established scientists like Michael Heithaus raises a different possibility. He presented a study called Predator–prey and competitive interactions between sharks (order Selachii) and dolphins (suborder Odontoceti): a review, that shares findings similar to television programs like the Discovery Channel's Are Sharks Afraid of Dolphins?. That is, sharks remain the apex predator in the ocean and do not fear dolphins or porpoises, except perhaps when out-numbered.
Richard Theiss of RTSea Productions believes what the scientific community has presented in published peer-review articles, but he also points out an important truth. "...what Michael had to say in his study is important: different species, different locations, different circumstances – all this makes it difficult to make a definitive statement. The Mythbusters video clip errors in not making the distinction between a white shark’s role as an ambushing predator and that of a scavenger. Each generates different behavior patterns. As a scavenger, which is what it was doing with the floating tuna head, it can be easily put off by another large fish in the area (did it look like a dolphin or another shark?). It’s just looking for an easy meal and doesn’t want to have to compete for it. I’ve seen this many times with white sharks at Isla Guadalupe (see RTSea Productions video below).
So, sharks will kill dolphins on occasion – seeking a slow, sick, or aged fish, just like the great white shark does in selecting a pinniped (seal or sea lion). What needs to be examined in a definitive study and not just through anecdotal storytelling is whether dolphins will show any aggressive tendencies towards sharks. It’s not so much as to whether sharks are scared of dolphins, but whether dolphins are fearless when it comes to sharks."
Copyright © 2011 by Open Water Source
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Open Water Swimming Magazine
Open Water Swimming MagazineThe 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 SwimmingAn 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.
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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.