Athough this is a delta style recumbent trike in this video I am sharing it here just because of it’s uniqueness. That is not to say that others have not made similar trikes and even bikes. I have written about one before. Here is a picture of it. As you can see it is propelled by rowing and not by pedaling.
Unfortunately it was back during my first tadpole rider blog and has been deleted and gone forever so I can’t link to it here. Of course, there have been many human powered watercraft of various sorts made over the years, but they are strictly for use in the water and not able to travel on land. I am only looking at trikes that can be ridden in the water as well as on land and also are classified as “recumbent”. Here is the video of this delta trike …
And here is another one I find even more impressive …
And then there is this one which mystifies me. With two large openings in the bottom where his feet step thru down onto the ground how can this shell float? There has to be more to this shell than meets the eye.
Tadpole Rider 
Hi Steve..! Great post again,as always..! This amphibious Velo is a new one to me, but I have seen in the past one, or two, But the one that sticks out in my mind the most is this one in which I will add a the link to the end of this comment.. This one is from the Czech Republic, Which for a number of years now has been developing some great stuff, one in wich comes to mind is the Azub trike, which I’m sure we all know quite well now, Especially now that it has followed the trend, and made it’s own version of a full fat trike…! But I remembered this as soon as I had seen the topic of this post.. I Seen this velo while I was considering velomobiles for pleasure riding as well as commuting to, and from places locally here in Florida, So I opened my google search browser, and looked up velos, and was looking at the images of them as I’m sure everyone has done by now after seeing one and curiosity getting the better of them as I have , And I spotted this interesting velo, and clicked on it to see who was its builder, and is when I stumbled on to this this odd shaped velo in which was amphibious as well as a cool looking ride…! Well to make a long story short not only does it work on land but it floats and travels on water as well.. So with out further ado, I present to you, and your readers my find, and here is it’s link, http://www.wired.com/2009/10/amphibian-velomobile-brings-pedal-power-to-the-water/ I hope you, and your readers find it as cool, and if not at least interesting to see…!
Armadillozack