Split fins?

[iztok]

I was simply making fun of the idea that the concepts were anywhere close to related.

Considering dolphins and humans have same ancestors (way back when) the relationship between different anatomy parts exists. Comparing leg to tail on the other hand is nowhere close to related.

 

[iztok]

Anyone who's ever seen a dolphin swim can attest to the silliness of the comparison.

Comparison of what? Saying leg when indeed it is tail? I agree!

 

[rollerboi]

Considering dolphins and humans have same ancestors (way back when) the relationship between different anatomy parts exists. Comparing leg to tail on the other hand is nowhere close to related.

Yup. Take a look at the picture below; you'll see a floating bone towards the back below the spinal column. This is the vestigial pelvis; legs would have been attacked here. There are none; the tail is an extension of the spine. The closest approximation human anatomy has is binding the legs together as in the picture of the freediver with the monofin that I posted earlier. However, this would still be a very poor approximation because the way our legs articulate with our pelvis does not even come close to how a dolphin works their tail.

It really is apples to oranges. And I'm STILL not seeing split fins. :lol

 

[Scott L]

I guess I'm a little confused. On that dolphin's tail I'm just not seeing split fins. At all. Unless you mean that little notch?

Instead, I see these:

If one notched out a pair of DR paddle fins or Mares Quattros relative to that dolphin's you could probaly still utilize in a GUE-F class. Split fins? Not so much...

 

[Blackwood]

Comparison of what? Saying leg when indeed it is tail? I agree!

Dolphin tail to splitfin.

 

[fnfalman]

Well that certainly settled the issue. Post these thoughts on GUE's, TDS's & DIR Explorers forums and attempt to convince tens of thousands of techinical divers that they have it all wrong with their blade and paddle fun usage. I need a good laugh today.

Last I checked, I ain't a tec diver, neither are millions of other divers.

It'd be pretty silly for the tech boys to come to the rec forum and lecture us on the use of double-tanks, stage bottles, mixed gas diving too, isn't it?

And you know what? They may very well have it wrong with paddle fin usage. Even paddle fins themselves are totally different in designs from each other.

 

[iztok]

making some sort of contraption that moves the fins and measures force would be the only way to really settle this.

 

[Teamcasa]

... all the debate is just personal opinion. The only one that counts is yours.

Funny thing about these split fin vs blade threads, they all end up the same. No one ever changes their mind, the paddle pounders end up ridiculing the spliters. Then the spliters happily go on to enjoy many more dives just as the paddle pounders do the same.

Like Merxlin said, it's just a personal opinion and at this point, we have read them all.

 

[fnfalman]

They will not properly function against any kind of a current. I hope you are the lone exception. I truly hope you have a great class. I am just somewhat amused with your faith in the fins....

Since that split fins; specifically Atomic Aquatics split fins, have been tested by ScubaLab to show that they have pretty much the same thrust and speed as a very good solid fins, so yeah, I think that my fins will do just fine with doubles and drysuit.

 

[iztok]

Different fins have different properties being split or blade (and even within its own kind). When I did my 800yard timed snorkeling for my DM I've tried doing it with F1s and after a lap I've realized that I would never make it and might suffer some severe cramps. Switched to my split fins (Tusa) and did good time and completed the task.

I started with split fins and switched to blade fins not so much for the speed as for control. I am able to control my position and trim better and swim back and turn around much easier.

Different fins for different tasks.