But... but... Republicans will say they look ugly under the ocean! Just like Trump said Wind mills are eyesores!

Back to the science of it. I wonder how much energy these oscillating plates can generate Wh? Their movements don't seem to be that much. Factor in the construction cost, damage/maintenance from salt water erosion, large fish bumping into it, the weather, etc. It might be feasible for small island communities/nations, but countries with a large landmass to coastal access ratio... its contribution to the overall energy sector might not be that significant. But every little bit of renewable, environmental risk-free energy helps, so, good stuff!

Got me on the ice one. I knew salt water would be more dense, but I mistakenly assumed that would mean a faster heat exchange. I didn't consider it might create a halocline strong enough to create an inverted thermocline.

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So clean up your drains with boiling salt water? That's enough to make me question everything -in- this video. I'd suspect it all of being just a collection of urban myths.

Misuse of contractions is totally a crime.

Forget the tow charges, fixing all the salt water damage will be insane.

All that salt water is no good for the engine.

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The full version - watch! *related=http://videosift.com/video/Molten-salt-Water-Explosion-full-awesome-version

Molten salt + Water = Stand back! (teaser) has been added as a related post - related requested by Zawash on that post.

Molten salt + Water = Explosion (full awesome version) has been added as a related post - related requested by Zawash.

Your video, Molten salt + Water = Stand back! (teaser), has made it into the Top 15 New Videos listing. Congratulations on your achievement. For your contribution you have been awarded 1 Power Point.

I was in Ireland years ago. Someone told me that there were hot tubs up in Northern Ireland that were filled with seaweed. Slippery seaweed, loads of salt, water warmed up....

If you can't find someone to do the warm noodle treatment, maybe you can hie yourself to Ireland.

Report back to me?

He really should have grown some mustard.

As someone who grows and makes much of his own food, including until recently having bee hives, I can't help but wonder, where did he spend the $1500? Airfare? Sourced locally, and with the produce grown at home with manure instead of expensive fertilizers, that should have been about a $30-$50 sandwich (not accounting for the untold labor), including gas to drive to a farm for milk/chicken and to the ocean to get your salt water (OK, add another $50 if you have to rent a boat to get to clean water)...but for that, you probably get around 8-10 sandwiches before needing more chicken, making it really just a $10-$12 sandwich. I'm confused.

The Jalopnik comments support @oohlalasassoon's suggestion: $2,000 for a car, or perhaps $600 for just a roof (which you might want to do to protect it from salt water from kayaks for instance).

Yeah, but they are looking for funding, so someone is going to pony up. I watched the video. Most of what they show is a Hubsan FPV quad that you can get through places like Banggood it uses a spreadspectrum 5.4 system to broadcast the video and a 2.4 system for control, but it does not have any autonomous capabilities. Hubsan makes some of the best stuff out there and we work very closely with them. The wrist thing is cludgey, and while it conveys the idea (You can see the needed twist I was talking about), it wont get them anywhere near their presented final design. Wifi would be an option, but it would require a wifi hotspot be built into the quad. I know we aren't talking about components that require a bunch of power, but we are talking about small batteries, so every mV counts. Especially for something that is wearable.
Now the Hexo+ is very much like the Airdog. Both seem very viable and are using existing technologies. My only concern about either is what do they do about object avoidance and low battery response. In either situation you can wind up losing the vehicle or injuring someone. Most higher end quadcopters have the ability to Return To Home (RTH) which is great since the pilot is in a stationary position, but put a pilot on the move and things get weird. If you are out surfing and the quad gets a low battery warning due to either a battery failure or having been waiting for 30 minutes for you to catch a wave, where does it go? It could go back to the take-off position, but if you drifted from there then it will need to calculate that distance and make sure it can get back. Salt water and electronics don't play well together. If you take your quad with you for a ride on a skateboard down the boardwalk, how do you make sure it doesn't hit a light post or a tree while it is zipping after you? You could fly at a higher altitude, but the zoom lens on the camera may not be enough. Hexo+ has a video of the founder riding a skateboard while the quad films. Notice that he stops short of going into the wooded area. I wonder why?
There are issues, but at least in both cases I think they are starting from proven technologies and have footprints that are achievable.